diff --git a/ATTRIBUTION.md b/ATTRIBUTION.md
index c8137dfbf..bf713e9ef 100644
--- a/ATTRIBUTION.md
+++ b/ATTRIBUTION.md
@@ -27,6 +27,8 @@ deck and UI icons are original work of the DeckCraft contributors (drawn or gene
 | `crates/media/tests/fixtures/tone*` (`tone.mp3`, `.m4a`, `.aac`, `.ogg`, `.opus`, `.flac`, `.wma`, `tone-alac.m4a`) | DeckCraft contributors | synthesised 0.5 s 440 Hz sine, encoded by `crates/media/tests/fixtures/make.sh` (ffmpeg as the encoder only) | CC0-1.0 | Audio decoding tests |
 | `crates/media/tests/fixtures/clip-*` (`clip-h264.mp4`, `clip-h264.mov`, `clip-hevc.mp4`, `clip-vp9.webm`, `clip-av1.mkv`) | DeckCraft contributors | 6 frames of a colour gradient generated by `make.sh` (python3), encoded by ffmpeg (x264 / x265 / libvpx / SVT-AV1 as encoders only) | CC0-1.0 | Video decoding tests |
 | `crates/media/tests/fixtures/make.sh` | DeckCraft contributors | this repository | MIT OR Apache-2.0 | Regenerates the media fixtures |
+| `crates/ui-egui/src/i18n/uk.tsv` | @dmatviichuk, assisted by Codex | Contributor-original Ukrainian translation in this repository; terminology checked against VESUM 6.8.6 and ULIF (validation tools/data are not bundled) | MIT OR Apache-2.0 (`LICENSE-MIT`, `LICENSE-APACHE`) | Ukrainian interface text |
+| `crates/ui-egui/src/i18n/pt-br.tsv` | @RicSchonfelder, AI-assisted | Contributor-original Brazilian Portuguese translation in this repository | MIT OR Apache-2.0 (`LICENSE-MIT`, `LICENSE-APACHE`) | Brazilian Portuguese interface text |
 
 ## Bundled through dependencies
 
diff --git a/Cargo.lock b/Cargo.lock
index e50d814e4..a397e870b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -890,6 +890,7 @@ dependencies = [
  "log",
  "rfd",
  "serde_json",
+ "sys-locale",
  "winit",
  "winresource",
 ]
@@ -4278,6 +4279,15 @@ dependencies = [
  "syn 3.0.6",
 ]
 
+[[package]]
+name = "sys-locale"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8eab9a99a024a169fe8a903cf9d4a3b3601109bcc13bd9e3c6fff259138626c4"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.27.0"
diff --git a/ROADMAP.md b/ROADMAP.md
index 801ddd843..75e634f61 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~20 points and ~120–210 h away
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (hours to ~95% per audience added; ready 56% → 55%; stage stays alpha; previous: major, full re-measure against PowerPoint for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Brazilian Portuguese UI catalog added alongside Ukrainian) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 DeckCraft aims at full PowerPoint parity, and to be better: faster, open (a documented zip+JSON
 format plus PPTX), scriptable by agents (CLI, JSON control channel, MCP), and available everywhere
@@ -84,7 +84,11 @@ EMF/SVG pictures, the data-loss and startup-crash bugs (#60, #40, #59) and the b
 
 ## Languages
 
-English only today; no string catalog yet (Ukrainian is in review as PR #34). Detail:
+English, Ukrainian and Brazilian Portuguese: Preferences offers System language, English,
+Українська and Português (Brasil). Matching OS/browser locales select a catalog automatically;
+explicit desktop choices persist in `ui.json`. Menus, ribbon, command palette, panels, dialogs and
+presenter controls use the interface catalog. Presentation content and command IDs retain their
+original values. Detail:
 [docs/localization-parity.md](docs/localization-parity.md).
 
 | Language | Code | UI strings | Status | Hours to full |
@@ -102,8 +106,9 @@ English only today; no string catalog yet (Ukrainian is in review as PR #34). De
 | Korean | ko | 0% | none | 4–7 |
 | Vietnamese | vi | 0% | none | 3–5 |
 
-Plus 8–14 h once for the catalog infrastructure. Other languages shipped: none. PowerPoint for Mac
-ships 26.
+Other languages shipped: **Ukrainian (uk) and Brazilian Portuguese (pt-BR)**, with English fallback
+and bundled glyph coverage. PowerPoint for Mac ships 26 languages; additional catalogs and native
+review remain.
 
 ## Upcoming
 
@@ -113,7 +118,7 @@ Ranked; detail and the full beta plan in [docs/roadmap.md](docs/roadmap.md).
    image paste (#53), editor soak tests. 10–20 h.
 2. **PPTX on real decks:** owned corpus, round-trip checks, fixes; #70, #74, #77; EMF/WMF and SVG.
    36–64 h.
-3. **Localization:** catalog, system language (#15), zh-Hans, es, fr, de, ja with IME. 27–46 h.
+3. **Localization:** additional catalogs for zh-Hans, es, fr, de, ja, native review and IME. 27–46 h.
 4. **Output:** vector PDF, printing. 10–16 h.
 5. **Depth that users hit:** font weights (#69), chart data and elements, Animation Pane timeline,
    presenter view on the right display, native macOS menu bar, Format Shape pane. 33–56 h.
@@ -128,6 +133,8 @@ app's JSON control channel (`deckcraft --control PORT`).
 
 | Date | What landed |
 |---|---|
+| 2026-10-12 | Brazilian Portuguese UI catalog (`pt-br.tsv`) added on the Ukrainian infrastructure |
+| 2026-10-10 | Ukrainian UI catalog, system-language detection and persisted language choice (#15, #30); translated placeholder prompts preserve presentation content |
 | 2026-10-10 | Progress docs restructured to the craftrules standard; full re-measure (breadth 79%, ready ~55%, mainstream ~53%, essentials ~62%, alpha). Landed: Animation Painter (#54), Morph geometry outlines (#27), animated GIF playback (#39), hyperlink colour and following links in the show (#37, #45), date fields in their own format (#36), flipped shapes keep readable text (#35), show transition fix (#46), start screen from the Home button (#49), MCP export lists PDF (#65), OmaStore manifest (#57) |
 | 2026-10-09 | v0.4.0 released. UAX #9 bidi and Arabic shaping (#4), Morph with Words and Characters (#5), tables grow to fit and PDF cell text (#14), rotating log file (#7), DX12 default on Windows (#16), H.264/HEVC overflow hardening (#2), PPTX sniffing anywhere in the zip (#19) |
 | 2026-10-08 | v0.2.0 and v0.3.0 released: Windows arm64, Flatpak aarch64, AppImage zsync updates, branded DMG |
@@ -139,6 +146,8 @@ app's JSON control channel (`deckcraft --control PORT`).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Recorded the Brazilian Portuguese catalog in the language summary |
+| 2026-10-10 | minor | Added Ukrainian UI and language selection to the reorganized language summary |
 | 2026-10-10 | minor | Readiness-by-audience table with hours to ~95% for full, mainstream and essentials |
 | 2026-10-10 | minor | Added mainstream practitioner (~53%) and essentials user (~62%); features recomputed from written area weights, ready ~56% → ~55% |
 | 2026-10-10 | minor | Stage checked against the new core-workflow gate: passes, stays alpha |
diff --git a/apps/deckcraft-web/Cargo.toml b/apps/deckcraft-web/Cargo.toml
index 7014421d8..fa1171ed3 100644
--- a/apps/deckcraft-web/Cargo.toml
+++ b/apps/deckcraft-web/Cargo.toml
@@ -27,4 +27,4 @@ rfd = { workspace = true }
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
 js-sys = "0.3"
-web-sys = { version = "0.3", features = ["Window", "Document", "Element", "HtmlElement", "HtmlCanvasElement", "HtmlAnchorElement", "Blob", "BlobPropertyBag", "Url", "Location", "CssStyleDeclaration"] }
+web-sys = { version = "0.3", features = ["Window", "Navigator", "Document", "Element", "HtmlElement", "HtmlCanvasElement", "HtmlAnchorElement", "Blob", "BlobPropertyBag", "Url", "Location", "CssStyleDeclaration"] }
diff --git a/apps/deckcraft-web/src/web.rs b/apps/deckcraft-web/src/web.rs
index f0199a558..014af2412 100644
--- a/apps/deckcraft-web/src/web.rs
+++ b/apps/deckcraft-web/src/web.rs
@@ -38,6 +38,7 @@ pub fn start() {
                     }
                     let inbox: Inbox = Inbox::default();
                     let mut app = SlideApp::new(Session::new(), services(inbox.clone(), cc.egui_ctx.clone()));
+                    app.services.system_locale = web_sys::window().and_then(|w| w.navigator().language());
                     let q = query();
                     if !q.contains("blank") {
                         if let Err(e) = deckcraft_engine::sample::open_sample(&mut app.session) {
@@ -111,10 +112,10 @@ fn services(inbox: Inbox, ctx: egui::Context) -> Services {
             let inbox = open_inbox.clone();
             let ctx = ctx.clone();
             let dialog = match purpose {
-                "picture" => rfd::AsyncFileDialog::new().add_filter("Pictures", PICTURE_EXTS),
-                "audio" => rfd::AsyncFileDialog::new().add_filter("Audio", AUDIO_EXTS),
-                "video" => rfd::AsyncFileDialog::new().add_filter("Video", VIDEO_EXTS),
-                _ => rfd::AsyncFileDialog::new().add_filter("Presentations", PRESENTATION_EXTS),
+                "picture" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Pictures"), PICTURE_EXTS),
+                "audio" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Audio"), AUDIO_EXTS),
+                "video" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Video"), VIDEO_EXTS),
+                _ => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Presentations"), PRESENTATION_EXTS),
             };
             wasm_bindgen_futures::spawn_local(async move {
                 let Some(file) = dialog.pick_file().await else {
diff --git a/apps/deckcraft/Cargo.toml b/apps/deckcraft/Cargo.toml
index 26ea30812..bbfaf9db0 100644
--- a/apps/deckcraft/Cargo.toml
+++ b/apps/deckcraft/Cargo.toml
@@ -11,6 +11,7 @@ default-run = "deckcraft"
 workspace = true
 
 [dependencies]
+sys-locale = "0.3.2"
 deckcraft-engine = { workspace = true }
 deckcraft-ui-egui = { workspace = true }
 deckcraft-media = { workspace = true }
diff --git a/apps/deckcraft/src/main.rs b/apps/deckcraft/src/main.rs
index 7b5e48bbe..7bb70469b 100644
--- a/apps/deckcraft/src/main.rs
+++ b/apps/deckcraft/src/main.rs
@@ -91,20 +91,21 @@ fn save_prefs(app: &SlideApp) {
 
 fn services() -> Services {
     Services {
+        system_locale: sys_locale::get_locale(),
         pick_open: Some(Box::new(|purpose: &str| {
             let d = rfd::FileDialog::new();
             let d = match purpose {
-                "picture" => d.add_filter("Pictures", &["png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff"]),
+                "picture" => d.add_filter(deckcraft_ui_egui::i18n::tr("Pictures"), &["png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff"]),
                 "audio" => d.add_filter(
-                    "Audio",
+                    deckcraft_ui_egui::i18n::tr("Audio"),
                     &["wav", "mp3", "m4a", "m4b", "aac", "flac", "ogg", "oga", "opus", "aif", "aiff", "aifc", "caf", "wma", "weba", "mka"],
                 ),
-                "video" => d.add_filter("Video", &["mp4", "m4v", "mov", "webm", "mkv", "wmv"]),
+                "video" => d.add_filter(deckcraft_ui_egui::i18n::tr("Video"), &["mp4", "m4v", "mov", "webm", "mkv", "wmv"]),
                 _ => d
-                    .add_filter("Presentations", &["deckcraft", "pptx", "potx", "ppsx"])
+                    .add_filter(deckcraft_ui_egui::i18n::tr("Presentations"), &["deckcraft", "pptx", "potx", "ppsx"])
                     .add_filter("DeckCraft", &["deckcraft"])
                     .add_filter("PowerPoint", &["pptx", "potx", "ppsx"])
-                    .add_filter("Outline", &["txt", "md"]),
+                    .add_filter(deckcraft_ui_egui::i18n::tr("Outline"), &["txt", "md"]),
             };
             d.pick_file().map(|p| p.to_string_lossy().to_string())
         })),
@@ -205,7 +206,8 @@ fn main() -> eframe::Result {
                 if let Ok(v) = app.session.execute("file.recovery.open", &serde_json::json!({}))
                     && let Some(n) = v.get("opened").and_then(|o| o.as_array()).map(Vec::len).filter(|n| *n > 0)
                 {
-                    app.set_status(format!("Recovered {n} unsaved presentation{} from the last session", if n == 1 { "" } else { "s" }));
+                    deckcraft_ui_egui::i18n::set_current(app.ui.interface_language.resolve(app.services.system_locale.as_deref()));
+                    app.set_status(deckcraft_ui_egui::i18n::recovered(n));
                 }
             }
             app.integrated_titlebar = cfg!(target_os = "macos");
diff --git a/crates/render/src/lib.rs b/crates/render/src/lib.rs
index 6dde577a0..3e80d735c 100644
--- a/crates/render/src/lib.rs
+++ b/crates/render/src/lib.rs
@@ -138,6 +138,8 @@ pub struct RenderOpts<'a> {
     pub scale: f64,
     /// Editor view: placeholder prompts and dashed placeholder outlines.
     pub edit: bool,
+    /// Optional interface prompt provider; custom layout prompts and document text stay intact.
+    pub placeholder_prompt: Option<fn(PhType) -> &'static str>,
     /// Draw shapes marked hidden (Selection pane) — the editor hides them like the show does.
     pub show_hidden: bool,
     /// Per-shape animation state.
@@ -166,6 +168,7 @@ impl Default for RenderOpts<'_> {
         RenderOpts {
             scale: 1.0,
             edit: false,
+            placeholder_prompt: None,
             show_hidden: false,
             state: None,
             skip: &[],
@@ -773,7 +776,7 @@ impl Renderer {
                 draw_layout_with(ctx, &l, tr, m, &st.paras);
             } else if f.opts.edit && s.ph.is_some() {
                 let kind = s.ph_type().unwrap_or(PhType::Body);
-                let prompt_body = prompt_body(rctx, s, kind);
+                let prompt_body = prompt_body(rctx, s, kind, f.opts.placeholder_prompt.map(|prompt| prompt(kind)));
                 if !prompt_body.is_empty() {
                     let grey = Rgba::rgb(0x59, 0x59, 0x59);
                     draw_text(ctx, rctx, s, &prompt_body, tr, m, &f.fields, Some(grey));
@@ -1009,7 +1012,7 @@ fn arrowheads(ctx: &mut RenderContext, rctx: &Ctx, line: &Line, ph: Option<Rgba>
 }
 
 /// The prompt shown in an empty placeholder, formatted like its content would be.
-fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType) -> TextBody {
+fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType, interface_prompt: Option<&str>) -> TextBody {
     // Layout/master prompt text when the layout supplies a custom one.
     let (lp, _) = resolve::parents(rctx, s);
     let custom = lp.and_then(|l| l.ph.as_ref().filter(|p| p.has_custom_prompt).and(l.text.as_ref())).filter(|t| !t.is_empty());
@@ -1019,7 +1022,7 @@ fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType) -> TextBody {
     if matches!(rctx.owner, resolve::Owner::Layout | resolve::Owner::Master) {
         return TextBody::default();
     }
-    let txt = kind.prompt();
+    let txt = interface_prompt.unwrap_or_else(|| kind.prompt());
     if txt.is_empty() || kind.is_footer_kind() {
         return TextBody::default();
     }
diff --git a/crates/render/src/tests.rs b/crates/render/src/tests.rs
index ccb4472fa..17bb7d863 100644
--- a/crates/render/src/tests.rs
+++ b/crates/render/src/tests.rs
@@ -523,3 +523,25 @@ fn hyperlinks_draw_in_the_hyperlink_colour_underlined() {
     let own = px(&run_deck(RunProps { link, fill: red.clone(), ..Default::default() }));
     assert_eq!(diff(&own, &px(&run_deck(RunProps { fill: red, underline: Some("sng".into()), ..Default::default() }))), 0);
 }
+
+#[test]
+fn interface_placeholder_prompts_preserve_custom_prompts_and_document_data() {
+    let mut p = Presentation::default();
+    let slide = p.slides.first().unwrap();
+    let shape = slide.shapes.iter().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    let c = Ctx::for_slide(&p, slide).unwrap();
+    let before = p.clone();
+    assert_eq!(prompt_body(&c, shape, PhType::Title, Some("Натисніть, щоб додати заголовок")).text(), "Натисніть, щоб додати заголовок");
+    assert_eq!(p, before);
+
+    let layout_id = slide.layout;
+    let master = Arc::make_mut(p.masters.first_mut().unwrap());
+    let layout = master.layouts.iter_mut().find(|layout| layout.id == layout_id).unwrap();
+    let shape = layout.shapes.iter_mut().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    shape.ph.as_mut().unwrap().has_custom_prompt = true;
+    shape.text = Some(TextBody::from_text("Click to add title"));
+    let slide = p.slides.first().unwrap();
+    let shape = slide.shapes.iter().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    let c = Ctx::for_slide(&p, slide).unwrap();
+    assert_eq!(prompt_body(&c, shape, PhType::Title, Some("Натисніть, щоб додати заголовок")).text(), "Click to add title");
+}
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index d267f76cb..69a261efb 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -56,7 +56,7 @@ pub fn show(app: &mut SlideApp, ui: &mut Ui) {
     let Some(st) = app.session.active() else { return };
     if st.doc.slides.is_empty() && st.selection.target == Target::Slides {
         let resp = ui.allocate_rect(avail, Sense::click());
-        ui.painter().text(avail.center(), Align2::CENTER_CENTER, "Click to add first slide", theme::font(22.0), t.text_dim);
+        ui.painter().text(avail.center(), Align2::CENTER_CENTER, crate::i18n::tr("Click to add first slide"), theme::font(22.0), t.text_dim);
         if resp.clicked() {
             let _ = app.run("slide.new", json!({"layout": "title"}));
         }
@@ -271,7 +271,7 @@ fn ruler(p: &egui::Painter, avail: Rect, slide: Rect, scale: f32, t: &Tokens) {
         };
         p.line_segment([pos2(x, top.max.y - h), pos2(x, top.max.y)], Stroke::new(1.0, t.text_faint));
         if k % 4 == 0 {
-            p.text(pos2(x + 2.0, top.min.y + 1.0), Align2::LEFT_TOP, format!("{}", k / 4), theme::font(8.0), t.text_dim);
+            p.text(pos2(x + 2.0, top.min.y + 1.0), Align2::LEFT_TOP, (k / 4).to_string(), theme::font(8.0), t.text_dim);
         }
         k += 1;
     }
@@ -540,47 +540,47 @@ fn context_menu(app: &mut SlideApp, resp: &egui::Response) {
     resp.context_menu(|ui| {
         let has_sel = app.session.active().is_some_and(|d| !d.selection.shapes.is_empty());
         for (l, id) in [("Cut", "edit.cut"), ("Copy", "edit.copy"), ("Paste", "edit.paste")] {
-            if ui.add_enabled(crate::ribbon::enabled(app, id), egui::Button::new(l)).clicked() {
+            if ui.add_enabled(crate::ribbon::enabled(app, id), egui::Button::new(crate::i18n::tr(l))).clicked() {
                 let _ = app.run(id, json!({}));
                 ui.close();
             }
         }
         ui.separator();
         if has_sel {
-            if ui.button("Edit Text").clicked() {
+            if ui.button(crate::i18n::tr("Edit Text")).clicked() {
                 let _ = app.run("text.edit", json!({}));
                 ui.close();
             }
-            ui.menu_button("Bring to Front", |ui| {
+            ui.menu_button(crate::i18n::tr("Bring to Front"), |ui| {
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::BringToFront, "Bring to Front", "arrange.bringToFront", json!({}));
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::BringForward, "Bring Forward", "arrange.bringForward", json!({}));
             });
-            ui.menu_button("Send to Back", |ui| {
+            ui.menu_button(crate::i18n::tr("Send to Back"), |ui| {
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::SendToBack, "Send to Back", "arrange.sendToBack", json!({}));
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::SendBackward, "Send Backward", "arrange.sendBackward", json!({}));
             });
-            ui.menu_button("Group", |ui| {
+            ui.menu_button(crate::i18n::tr("Group"), |ui| {
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::Group, "Group", "arrange.group", json!({}));
                 crate::ribbon::menu_item(app, ui, crate::icons::Icon::Ungroup, "Ungroup", "arrange.ungroup", json!({}));
             });
-            if ui.button("Link…").clicked() {
+            if ui.button(crate::i18n::tr("Link…")).clicked() {
                 app.dialog = Some(crate::dialogs::Dialog::new("hyperlink"));
                 ui.close();
             }
-            if ui.button("Edit Alt Text…").clicked() {
+            if ui.button(crate::i18n::tr("Edit Alt Text…")).clicked() {
                 app.dialog = Some(crate::dialogs::Dialog::new("altText"));
                 ui.close();
             }
-            if ui.button("Set as Default Shape").clicked() {
+            if ui.button(crate::i18n::tr("Set as Default Shape")).clicked() {
                 let _ = app.run("shape.setDefault", json!({}));
                 ui.close();
             }
-            if ui.button("Format Shape…").clicked() {
+            if ui.button(crate::i18n::tr("Format Shape…")).clicked() {
                 let _ = app.run("view.pane", json!({"pane": "format"}));
                 ui.close();
             }
         } else {
-            ui.menu_button("Layout", |ui| {
+            ui.menu_button(crate::i18n::tr("Layout"), |ui| {
                 let layouts: Vec<(String, u32)> = app
                     .session
                     .active()
@@ -593,15 +593,15 @@ fn context_menu(app: &mut SlideApp, resp: &egui::Response) {
                     }
                 }
             });
-            if ui.button("Reset Slide").clicked() {
+            if ui.button(crate::i18n::tr("Reset Slide")).clicked() {
                 let _ = app.run("slide.reset", json!({}));
                 ui.close();
             }
-            if ui.button("Format Background…").clicked() {
+            if ui.button(crate::i18n::tr("Format Background…")).clicked() {
                 let _ = app.run("view.pane", json!({"pane": "background"}));
                 ui.close();
             }
-            if ui.button("New Comment").clicked() {
+            if ui.button(crate::i18n::tr("New Comment")).clicked() {
                 app.dialog = Some(crate::dialogs::Dialog::new("comment"));
                 ui.close();
             }
diff --git a/crates/ui-egui/src/credits.rs b/crates/ui-egui/src/credits.rs
index 765dec19d..b7f01233b 100644
--- a/crates/ui-egui/src/credits.rs
+++ b/crates/ui-egui/src/credits.rs
@@ -123,18 +123,20 @@ impl Contributor {
 
     /// One line with everything we know, for tooltips.
     pub fn summary(&self) -> String {
-        format!(
+        crate::i18n::format(
             "@{}: {} PRs, {} commits, +{} / −{} lines (Δ {}), +{} / −{} binary assets, {} – {}",
-            self.login,
-            self.prs,
-            self.commits,
-            group(self.lines_added),
-            group(self.lines_deleted),
-            signed(self.lines_delta()),
-            self.binary_added,
-            self.binary_deleted,
-            day(self.first_commit),
-            day(self.last_commit),
+            &[
+                (self.login).to_string(),
+                (self.prs).to_string(),
+                (self.commits).to_string(),
+                (group(self.lines_added)).to_string(),
+                (group(self.lines_deleted)).to_string(),
+                (signed(self.lines_delta())).to_string(),
+                (self.binary_added).to_string(),
+                (self.binary_deleted).to_string(),
+                (day(self.first_commit)).to_string(),
+                (day(self.last_commit)).to_string(),
+            ],
         )
     }
 }
@@ -215,39 +217,43 @@ pub fn contributors_ui(ui: &mut egui::Ui) {
     let id = egui::Id::new("credits_view");
     let mut v = ui.data_mut(|d| d.get_temp::<View>(id)).unwrap_or_default();
     ui.horizontal_wrapped(|ui| {
-        ui.label("Show");
+        ui.label(crate::i18n::tr("Show"));
         for m in NameMode::ALL {
-            if ui.selectable_label(v.names == m, m.label()).clicked() {
+            if ui.selectable_label(v.names == m, crate::i18n::tr(m.label())).clicked() {
                 v.names = m;
             }
         }
         ui.separator();
-        ui.label("Sort");
-        egui::ComboBox::from_id_salt("credits_sort").selected_text(v.key.label().0).show_ui(ui, |ui| {
+        ui.label(crate::i18n::tr("Sort"));
+        egui::ComboBox::from_id_salt("credits_sort").selected_text(crate::i18n::tr(v.key.label().0)).show_ui(ui, |ui| {
             for k in SortKey::ALL {
-                if ui.selectable_label(v.key == k, k.label().0).clicked() {
+                if ui.selectable_label(v.key == k, crate::i18n::tr(k.label().0)).clicked() {
                     v.key = k;
                     v.ascending = k.default_ascending();
                 }
             }
         });
-        if ui.button(if v.ascending { "▲" } else { "▼" }).on_hover_text("Reverse the order").clicked() {
+        if ui.button(if v.ascending { "▲" } else { "▼" }).on_hover_text(crate::i18n::tr("Reverse the order")).clicked() {
             v.ascending = !v.ascending;
         }
         ui.separator();
-        if ui.selectable_label(!v.table, "Grab bag").clicked() {
+        if ui.selectable_label(!v.table, crate::i18n::tr("Grab bag")).clicked() {
             v.table = false;
         }
-        if ui.selectable_label(v.table, "Table").clicked() {
+        if ui.selectable_label(v.table, crate::i18n::tr("Table")).clicked() {
             v.table = true;
         }
     });
     let list = sorted(CONTRIBUTORS, v.names, v.key, v.ascending);
-    ui.label(RichText::new(format!("{} contributors · {} commits", list.len(), group(TOTAL_COMMITS))).small().weak());
+    ui.label(
+        RichText::new(crate::i18n::format("{} contributors · {} commits", &[(list.len()).to_string(), (group(TOTAL_COMMITS)).to_string()]))
+            .small()
+            .weak(),
+    );
     ui.separator();
     egui::ScrollArea::both().auto_shrink([false, false]).show(ui, |ui| {
         if list.is_empty() {
-            ui.label("No contributor data was built into this copy.");
+            ui.label(crate::i18n::tr("No contributor data was built into this copy."));
         } else if v.table {
             table(ui, &list, &mut v);
         } else {
@@ -268,7 +274,11 @@ fn table(ui: &mut egui::Ui, list: &[&Contributor], v: &mut View) {
     egui::Grid::new("credits_table").striped(true).num_columns(SortKey::ALL.len()).show(ui, |ui| {
         for k in SortKey::ALL {
             let arrow = if v.key == k { if v.ascending { " ▲" } else { " ▼" } } else { "" };
-            if ui.button(RichText::new(format!("{}{arrow}", k.label().1)).strong()).on_hover_text(k.label().0).clicked() {
+            if ui
+                .button(RichText::new(format!("{}{arrow}", crate::i18n::tr(k.label().1))).strong())
+                .on_hover_text(crate::i18n::tr(k.label().0))
+                .clicked()
+            {
                 if v.key == k {
                     v.ascending = !v.ascending;
                 } else {
@@ -297,14 +307,14 @@ fn table(ui: &mut egui::Ui, list: &[&Contributor], v: &mut View) {
 /// About ▸ Models: AI models credited in Co-Authored-By trailers.
 pub fn models_ui(ui: &mut egui::Ui) {
     if MODELS.is_empty() {
-        ui.label("No model credits were built into this copy.");
+        ui.label(crate::i18n::tr("No model credits were built into this copy."));
         return;
     }
     let assisted: u64 = MODELS.iter().map(|m| m.commits).max().unwrap_or(0).max(1);
     egui::ScrollArea::both().auto_shrink([false, false]).show(ui, |ui| {
         egui::Grid::new("credits_models").striped(true).num_columns(6).show(ui, |ui| {
             for h in ["Company", "Model", "Version", "Commits", "% of all commits", "Lines +/−"] {
-                ui.label(RichText::new(h).strong());
+                ui.label(RichText::new(crate::i18n::tr(h)).strong());
             }
             ui.end_row();
             for m in MODELS {
diff --git a/crates/ui-egui/src/dialogs.rs b/crates/ui-egui/src/dialogs.rs
index 73ce180b4..61f1fd9ad 100644
--- a/crates/ui-egui/src/dialogs.rs
+++ b/crates/ui-egui/src/dialogs.rs
@@ -64,7 +64,7 @@ pub fn show(app: &mut SlideApp, ctx: &egui::Context) {
     let Some(mut d) = app.dialog.take() else { return };
     let mut open = true;
     let mut close = false;
-    egui::Window::new(title(&d.id))
+    egui::Window::new(crate::i18n::tr(title(&d.id)))
         .id(egui::Id::new(("dialog", d.id.clone())))
         .collapsible(false)
         .resizable(false)
@@ -85,12 +85,14 @@ fn buttons(ui: &mut Ui, ok_label: &str) -> (bool, bool) {
     ui.add_space(8.0);
     ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
         let t = Tokens::get(ui.ctx());
-        if ui.add(egui::Button::new(egui::RichText::new(ok_label).color(t.accent_text)).fill(t.accent).min_size(vec2(72.0, 24.0))).clicked()
+        if ui
+            .add(egui::Button::new(egui::RichText::new(crate::i18n::tr(ok_label)).color(t.accent_text)).fill(t.accent).min_size(vec2(72.0, 24.0)))
+            .clicked()
             || ui.input(|i| i.key_pressed(egui::Key::Enter))
         {
             ok = true;
         }
-        if ui.add(egui::Button::new("Cancel").min_size(vec2(72.0, 24.0))).clicked() {
+        if ui.add(egui::Button::new(crate::i18n::tr("Cancel")).min_size(vec2(72.0, 24.0))).clicked() {
             cancel = true;
         }
     });
@@ -100,7 +102,7 @@ fn buttons(ui: &mut Ui, ok_label: &str) -> (bool, bool) {
 fn field(ui: &mut Ui, d: &mut Dialog, label: &str, key: &str, default: &str) {
     let mut v = d.get(key, default);
     ui.horizontal(|ui| {
-        ui.add_sized(vec2(120.0, 20.0), egui::Label::new(label));
+        ui.add_sized(vec2(120.0, 20.0), egui::Label::new(crate::i18n::tr(label)));
         ui.add(egui::TextEdit::singleline(&mut v).desired_width(180.0));
     });
     d.fields.insert(key.into(), v);
@@ -108,7 +110,7 @@ fn field(ui: &mut Ui, d: &mut Dialog, label: &str, key: &str, default: &str) {
 
 fn check(ui: &mut Ui, d: &mut Dialog, label: &str, key: &str, default: bool) -> bool {
     let mut v = d.get(key, if default { "1" } else { "0" }) == "1";
-    ui.checkbox(&mut v, label);
+    ui.checkbox(&mut v, crate::i18n::tr(label));
     d.fields.insert(key.into(), if v { "1".into() } else { "0".into() });
     v
 }
@@ -135,17 +137,20 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
         }
         "slideSize" => {
             let cur = app.session.active().map(|s| s.doc.slide_size).unwrap_or(deckcraft_model::defaults::WIDE);
-            ui.label("Slides sized for:");
+            ui.label(crate::i18n::tr("Slides sized for:"));
             let preset = d.get("preset", "");
-            egui::ComboBox::from_id_salt("sizes").selected_text(if preset.is_empty() { "Custom" } else { &preset }).show_ui(ui, |ui| {
-                for (label, w, h) in deckcraft_model::defaults::SLIDE_SIZES {
-                    if ui.selectable_label(preset == *label, *label).clicked() {
-                        d.fields.insert("preset".into(), label.to_string());
-                        d.fields.insert("w".into(), format!("{:.2}", w / 72.0));
-                        d.fields.insert("h".into(), format!("{:.2}", h / 72.0));
+            egui::ComboBox::from_id_salt("sizes").selected_text(crate::i18n::tr(if preset.is_empty() { "Custom" } else { &preset })).show_ui(
+                ui,
+                |ui| {
+                    for (label, w, h) in deckcraft_model::defaults::SLIDE_SIZES {
+                        if ui.selectable_label(preset == *label, crate::i18n::tr(label)).clicked() {
+                            d.fields.insert("preset".into(), label.to_string());
+                            d.fields.insert("w".into(), format!("{:.2}", w / 72.0));
+                            d.fields.insert("h".into(), format!("{:.2}", h / 72.0));
+                        }
                     }
-                }
-            });
+                },
+            );
             field(ui, d, "Width (in):", "w", &format!("{:.2}", cur.width / 72.0));
             field(ui, d, "Height (in):", "h", &format!("{:.2}", cur.height / 72.0));
             let maximize = check(ui, d, "Maximize content (else ensure fit)", "max", false);
@@ -168,9 +173,9 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             let mut apply_all = false;
             let mut apply = false;
             ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
-                apply_all = ui.button("Apply to All").clicked();
-                apply = ui.button("Apply").clicked();
-                if ui.button("Cancel").clicked() {
+                apply_all = ui.button(crate::i18n::tr("Apply to All")).clicked();
+                apply = ui.button(crate::i18n::tr("Apply")).clicked();
+                if ui.button(crate::i18n::tr("Cancel")).clicked() {
                     d.fields.insert("cancel".into(), "1".into());
                 }
             });
@@ -188,13 +193,13 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
         "hyperlink" => {
             let mode = d.get("mode", "url");
             ui.horizontal(|ui| {
-                if ui.selectable_label(mode == "url", "Web Page or File").clicked() {
+                if ui.selectable_label(mode == "url", crate::i18n::tr("Web Page or File")).clicked() {
                     d.fields.insert("mode".into(), "url".into());
                 }
-                if ui.selectable_label(mode == "slide", "This Document").clicked() {
+                if ui.selectable_label(mode == "slide", crate::i18n::tr("This Document")).clicked() {
                     d.fields.insert("mode".into(), "slide".into());
                 }
-                if ui.selectable_label(mode == "email", "Email Address").clicked() {
+                if ui.selectable_label(mode == "email", crate::i18n::tr("Email Address")).clicked() {
                     d.fields.insert("mode".into(), "email".into());
                 }
             });
@@ -233,13 +238,13 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
         "setupShow" => {
             let sh = app.session.active().map(|s| s.doc.show.clone()).unwrap_or_default();
             let ty = d.get("type", &sh.show_type);
-            ui.label("Show type");
+            ui.label(crate::i18n::tr("Show type"));
             for (l, v) in [
                 ("Presented by a speaker (full screen)", "speaker"),
                 ("Browsed by an individual (window)", "browsed"),
                 ("Browsed at a kiosk (full screen)", "kiosk"),
             ] {
-                if ui.radio(ty == v, l).clicked() {
+                if ui.radio(ty == v, crate::i18n::tr(l)).clicked() {
                     d.fields.insert("type".into(), v.into());
                 }
             }
@@ -261,21 +266,31 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 ui.ctx().send_viewport_cmd(egui::ViewportCommand::Close);
                 return true;
             }
-            let what = if names.len() == 1 { format!("“{}”", names[0]) } else { format!("{} presentations", names.len()) };
-            ui.label(egui::RichText::new(format!("Do you want to save the changes you made to {what}?")).strong());
-            ui.label("Your changes will be lost if you don't save them.");
+            let what = if names.len() == 1 {
+                format!("“{}”", names[0])
+            } else {
+                crate::i18n::count(names.len(), "presentations", "презентації|презентацій|презентацій", "apresentação|apresentações")
+            };
+            ui.label(
+                egui::RichText::new(crate::i18n::format("Do you want to save the changes you made to {what}?", std::slice::from_ref(&what))).strong(),
+            );
+            ui.label(crate::i18n::tr("Your changes will be lost if you don't save them."));
             ui.add_space(8.0);
             let mut done = false;
             ui.horizontal(|ui| {
                 let t = Tokens::get(ui.ctx());
-                if ui.add(egui::Button::new("Don't Save").min_size(vec2(84.0, 24.0))).clicked() {
+                if ui.add(egui::Button::new(crate::i18n::tr("Don't Save")).min_size(vec2(84.0, 24.0))).clicked() {
                     let _ = app.session.execute("file.recovery.discard", &json!({}));
                     app.quit_confirmed = true;
                     ui.ctx().send_viewport_cmd(egui::ViewportCommand::Close);
                     done = true;
                 }
                 ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
-                    let save = ui.add(egui::Button::new(egui::RichText::new("Save").color(t.accent_text)).fill(t.accent).min_size(vec2(72.0, 24.0)));
+                    let save = ui.add(
+                        egui::Button::new(egui::RichText::new(crate::i18n::tr("Save")).color(t.accent_text))
+                            .fill(t.accent)
+                            .min_size(vec2(72.0, 24.0)),
+                    );
                     if save.clicked() || ui.input(|i| i.key_pressed(egui::Key::Enter)) {
                         if app.save_all() {
                             app.quit_confirmed = true;
@@ -283,7 +298,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                         }
                         done = true;
                     }
-                    if ui.add(egui::Button::new("Cancel").min_size(vec2(72.0, 24.0))).clicked() {
+                    if ui.add(egui::Button::new(crate::i18n::tr("Cancel")).min_size(vec2(72.0, 24.0))).clicked() {
                         done = true;
                     }
                 });
@@ -296,7 +311,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                     let _ = app.run("view.zoom", json!({"percent": pct}));
                 }
             }
-            if ui.button("Fit").clicked() {
+            if ui.button(crate::i18n::tr("Fit")).clicked() {
                 app.ui.zoom = None;
             }
             let (ok, cancel) = buttons(ui, "OK");
@@ -304,7 +319,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
         }
         "comment" => {
             let mut v = d.get("text", "");
-            ui.add(egui::TextEdit::multiline(&mut v).hint_text("Start a conversation").desired_rows(4).desired_width(320.0));
+            ui.add(egui::TextEdit::multiline(&mut v).hint_text(crate::i18n::tr("Start a conversation")).desired_rows(4).desired_width(320.0));
             d.fields.insert("text".into(), v.clone());
             let (ok, cancel) = buttons(ui, "Post");
             if ok && !v.trim().is_empty() {
@@ -315,7 +330,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
         }
         "altText" => {
             let cur = app.session.active().and_then(|s| s.selected_shapes().first().map(|x| x.descr.clone())).unwrap_or_default();
-            ui.label("How would you describe this object and its context to someone who is blind or has low vision?");
+            ui.label(crate::i18n::tr("How would you describe this object and its context to someone who is blind or has low vision?"));
             let mut v = d.get("text", &cur);
             ui.add(egui::TextEdit::multiline(&mut v).desired_rows(4).desired_width(340.0));
             d.fields.insert("text".into(), v.clone());
@@ -327,7 +342,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "outline" => {
-            ui.label("Paste or type an outline. Unindented lines become slide titles; tab-indented lines become bullets.");
+            ui.label(crate::i18n::tr("Paste or type an outline. Unindented lines become slide titles; tab-indented lines become bullets."));
             let mut v = d.get("text", "");
             ui.add(egui::TextEdit::multiline(&mut v).desired_rows(10).desired_width(380.0).code_editor());
             d.fields.insert("text".into(), v.clone());
@@ -368,7 +383,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "export" => {
-            ui.label("Export the presentation as:");
+            ui.label(crate::i18n::tr("Export the presentation as:"));
             let fmt = d.get("fmt", "pdf");
             for (l, f) in [
                 ("PDF document (.pdf)", "pdf"),
@@ -378,7 +393,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 ("PowerPoint Presentation (.pptx)", "pptx"),
                 ("Outline (.txt)", "outline"),
             ] {
-                if ui.radio(fmt == f, l).clicked() {
+                if ui.radio(fmt == f, crate::i18n::tr(l)).clicked() {
                     d.fields.insert("fmt".into(), f.into());
                 }
             }
@@ -386,7 +401,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             if fmt == "pdf" {
                 ui.add_space(4.0);
                 ui.horizontal(|ui| {
-                    ui.label("Print layout:");
+                    ui.label(crate::i18n::tr("Print layout:"));
                     egui::ComboBox::from_id_salt("pdf_layout")
                         .selected_text(match pdf_layout.as_str() {
                             "notes" => "Notes Pages",
@@ -409,14 +424,14 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                                 ("h6", "Handouts (6 slides per page)"),
                                 ("h9", "Handouts (9 slides per page)"),
                             ] {
-                                if ui.selectable_label(pdf_layout == k, l).clicked() {
+                                if ui.selectable_label(pdf_layout == k, crate::i18n::tr(l)).clicked() {
                                     d.fields.insert("pdfLayout".into(), k.into());
                                 }
                             }
                         });
                 });
                 let mut hidden = d.get("pdfHidden", "false") == "true";
-                if ui.checkbox(&mut hidden, "Include hidden slides").changed() {
+                if ui.checkbox(&mut hidden, crate::i18n::tr("Include hidden slides")).changed() {
                     d.fields.insert("pdfHidden".into(), hidden.to_string());
                 }
             }
@@ -450,7 +465,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                         }
                         let r = app.session.execute("file.export", &params);
                         match r {
-                            Ok(_) => app.set_status(format!("Exported {path}")),
+                            Ok(_) => app.set_status(crate::i18n::format("Exported {path}", std::slice::from_ref(&path))),
                             Err(e) => app.set_status(e.to_string()),
                         }
                     }
@@ -473,7 +488,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "symbol" => {
-            ui.label("Click a symbol to insert it at the insertion point.");
+            ui.label(crate::i18n::tr("Click a symbol to insert it at the insertion point."));
             let groups: [(&str, &str); 6] = [
                 ("Punctuation", "–—‘’“”…•·§¶†‡‰′″‹›«»¡¿"),
                 ("Currency", "$€£¥¢₹₩₽₺₿"),
@@ -483,7 +498,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 ("Shapes", "■□▪▫▲△▶▷▼▽◀◁◆◇○●◎★☆✓✔✗✘♠♣♥♦"),
             ];
             for (g, chars) in groups {
-                ui.label(egui::RichText::new(g).font(theme::bold(12.0)));
+                ui.label(egui::RichText::new(crate::i18n::tr(g)).font(theme::bold(12.0)));
                 ui.horizontal_wrapped(|ui| {
                     for c in chars.chars() {
                         if ui.add(egui::Button::new(egui::RichText::new(c.to_string()).size(16.0)).min_size(vec2(26.0, 26.0))).clicked() {
@@ -499,7 +514,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "equation" => {
-            ui.label("Type an equation in linear form (e.g. a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a).");
+            ui.label(crate::i18n::tr("Type an equation in linear form (e.g. a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a)."));
             let mut v = d.get("eq", "");
             ui.add(egui::TextEdit::singleline(&mut v).desired_width(340.0).font(theme::font(15.0)));
             d.fields.insert("eq".into(), v.clone());
@@ -519,13 +534,16 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             let v = app.session.execute("review.spelling", &json!({})).unwrap_or_default();
             let list = v.as_array().cloned().unwrap_or_default();
             if list.is_empty() {
-                ui.label("The spelling check is complete. No issues found.");
+                ui.label(crate::i18n::tr("The spelling check is complete. No issues found."));
             }
             for item in &list {
                 ui.horizontal(|ui| {
                     let w = item.get("word").and_then(Value::as_str).unwrap_or("");
-                    ui.label(format!("Slide {}: “{w}”", item.get("slide").and_then(Value::as_u64).unwrap_or(0) + 1));
-                    if ui.small_button("Go to").clicked() {
+                    ui.label(crate::i18n::format(
+                        "Slide {}: “{w}”",
+                        &[(item.get("slide").and_then(Value::as_u64).unwrap_or(0) + 1).to_string(), (w).to_string()],
+                    ));
+                    if ui.small_button(crate::i18n::tr("Go to")).clicked() {
                         let _ = app.run("slide.go", json!({"index": item.get("slide").cloned().unwrap_or_default()}));
                     }
                 });
@@ -537,18 +555,22 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             let v = app.session.execute("review.accessibility", &json!({})).unwrap_or_default();
             let list = v.as_array().cloned().unwrap_or_default();
             if list.is_empty() {
-                ui.label("No accessibility issues found. People with disabilities should not have difficulty reading this document.");
+                ui.label(crate::i18n::tr(
+                    "No accessibility issues found. People with disabilities should not have difficulty reading this document.",
+                ));
             }
             egui::ScrollArea::vertical().max_height(300.0).show(ui, |ui| {
                 for item in &list {
                     ui.horizontal(|ui| {
-                        ui.label(format!(
+                        ui.label(crate::i18n::format(
                             "Slide {}: {}{}",
-                            item.get("slide").and_then(Value::as_u64).unwrap_or(0) + 1,
-                            item.get("issue").and_then(Value::as_str).unwrap_or(""),
-                            item.get("name").and_then(Value::as_str).map(|n| format!(" — {n}")).unwrap_or_default()
+                            &[
+                                (item.get("slide").and_then(Value::as_u64).unwrap_or(0) + 1).to_string(),
+                                (item.get("issue").and_then(Value::as_str).unwrap_or("")).to_string(),
+                                (item.get("name").and_then(Value::as_str).map(|n| format!(" — {n}")).unwrap_or_default()).to_string(),
+                            ],
                         ));
-                        if ui.small_button("Go to").clicked() {
+                        if ui.small_button(crate::i18n::tr("Go to")).clicked() {
                             let _ = app.run("slide.go", json!({"index": item.get("slide").cloned().unwrap_or_default()}));
                             if let Some(id) = item.get("shape") {
                                 let _ = app.run("edit.select", json!({"ids": [id]}));
@@ -561,7 +583,8 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "language" => {
-            ui.label("Mark selected text as:");
+            ui.label("Українська");
+            ui.label(crate::i18n::tr("Mark selected text as:"));
             for l in [
                 "English (United States)",
                 "English (United Kingdom)",
@@ -574,7 +597,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 "中文",
                 "العربية",
             ] {
-                let _ = ui.selectable_label(l.starts_with("English (United States)"), l);
+                let _ = ui.selectable_label(l.starts_with("English (United States)"), crate::i18n::tr(l));
             }
             let (ok, cancel) = buttons(ui, "OK");
             ok || cancel
@@ -583,8 +606,17 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             let shows = app.session.active().map(|s| s.doc.custom_shows.clone()).unwrap_or_default();
             for s in &shows {
                 ui.horizontal(|ui| {
-                    ui.label(format!("{} ({} slides)", s.name, s.slides.len()));
-                    if ui.small_button("Delete").clicked() {
+                    ui.label(format!(
+                        "{} ({})",
+                        s.name,
+                        crate::i18n::count(
+                            s.slides.len(),
+                            if s.slides.len() == 1 { "slide" } else { "slides" },
+                            "слайд|слайди|слайдів",
+                            "slide|slides"
+                        )
+                    ));
+                    if ui.small_button(crate::i18n::tr("Delete")).clicked() {
                         let _ = app.run("show.customShow", json!({"name": s.name, "delete": true}));
                     }
                 });
@@ -606,11 +638,11 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                     .find_map(|x| if let deckcraft_model::ShapeKind::Chart(c) = &x.kind { Some(((**c).clone(), x.id)) } else { None })
             });
             let Some((c, id)) = ch else {
-                ui.label("Select a chart first.");
+                ui.label(crate::i18n::tr("Select a chart first."));
                 let (ok, cancel) = buttons(ui, "Close");
                 return ok || cancel;
             };
-            ui.label("Edit the data: first row = series names, first column = categories.");
+            ui.label(crate::i18n::tr("Edit the data: first row = series names, first column = categories."));
             let mut grid: Vec<Vec<String>> = d.params.get("grid").and_then(|g| serde_json::from_value(g.clone()).ok()).unwrap_or_else(|| {
                 let mut g = vec![std::iter::once(String::new()).chain(c.series.iter().map(|s| s.name.clone())).collect::<Vec<_>>()];
                 for (i, cat) in c.categories.iter().enumerate() {
@@ -631,11 +663,11 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                 }
             });
             ui.horizontal(|ui| {
-                if ui.button("+ Row").clicked() {
+                if ui.button(crate::i18n::tr("+ Row")).clicked() {
                     let n = grid.first().map(|r| r.len()).unwrap_or(2);
                     grid.push(vec![String::new(); n]);
                 }
-                if ui.button("+ Series").clicked() {
+                if ui.button(crate::i18n::tr("+ Series")).clicked() {
                     for r in grid.iter_mut() {
                         r.push(String::new());
                     }
@@ -667,7 +699,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok || cancel
         }
         "smartart" => {
-            ui.label("Pick a graphic; type one item per line.");
+            ui.label(crate::i18n::tr("Pick a graphic; type one item per line."));
             let kind = d.get("kind", "process");
             ui.horizontal_wrapped(|ui| {
                 for (k, l) in [
@@ -678,7 +710,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
                     ("pyramid", "Pyramid"),
                     ("matrix", "Matrix"),
                 ] {
-                    if ui.selectable_label(kind == k, l).clicked() {
+                    if ui.selectable_label(kind == k, crate::i18n::tr(l)).clicked() {
                         d.fields.insert("kind".into(), k.into());
                     }
                 }
@@ -696,7 +728,7 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             let tab = d.get("tab", "about");
             ui.horizontal(|ui| {
                 for (k, l) in [("about", "About"), ("contributors", "Contributors"), ("models", "Models")] {
-                    if ui.selectable_label(tab == k, l).clicked() {
+                    if ui.selectable_label(tab == k, crate::i18n::tr(l)).clicked() {
                         d.fields.insert("tab".into(), k.into());
                     }
                 }
@@ -715,29 +747,39 @@ fn body(app: &mut SlideApp, ui: &mut Ui, d: &mut Dialog) -> bool {
             ok
         }
         "preferences" => {
-            ui.label(egui::RichText::new("General").font(theme::bold(13.0)));
+            ui.horizontal(|ui| {
+                ui.label(crate::i18n::tr("Interface language:"));
+                egui::ComboBox::from_id_salt("interface_language").selected_text(app.ui.interface_language.label()).show_ui(ui, |ui| {
+                    for language in crate::i18n::Language::ALL {
+                        if ui.selectable_label(app.ui.interface_language == language, crate::i18n::tr(language.label())).clicked() {
+                            let _ = app.run("app.language", json!({"language": language.code()}));
+                        }
+                    }
+                });
+            });
+            ui.label(egui::RichText::new(crate::i18n::tr("General")).font(theme::bold(13.0)));
             let mut dark = app.ui.brightness == theme::Brightness::Dark;
-            if ui.checkbox(&mut dark, "Dark appearance").changed() {
+            if ui.checkbox(&mut dark, crate::i18n::tr("Dark appearance")).changed() {
                 let _ = app.run("view.dark", json!({"on": dark}));
             }
             let mut scale = app.ui.ui_scale;
-            if ui.add(egui::Slider::new(&mut scale, 0.75..=1.75).text("Interface size")).changed() {
+            if ui.add(egui::Slider::new(&mut scale, 0.75..=1.75).text(crate::i18n::tr("Interface size"))).changed() {
                 app.ui.ui_scale = scale;
             }
-            ui.label(egui::RichText::new("Editing").font(theme::bold(13.0)));
-            ui.checkbox(&mut app.session.prefs.smart_guides, "Show smart guides");
-            ui.checkbox(&mut app.session.prefs.snap_to_grid, "Snap objects to grid");
-            ui.checkbox(&mut app.session.prefs.smart_quotes, "Replace straight quotes with smart quotes");
-            ui.checkbox(&mut app.session.prefs.autocorrect, "AutoCorrect as you type");
+            ui.label(egui::RichText::new(crate::i18n::tr("Editing")).font(theme::bold(13.0)));
+            ui.checkbox(&mut app.session.prefs.smart_guides, crate::i18n::tr("Show smart guides"));
+            ui.checkbox(&mut app.session.prefs.snap_to_grid, crate::i18n::tr("Snap objects to grid"));
+            ui.checkbox(&mut app.session.prefs.smart_quotes, crate::i18n::tr("Replace straight quotes with smart quotes"));
+            ui.checkbox(&mut app.session.prefs.autocorrect, crate::i18n::tr("AutoCorrect as you type"));
             ui.horizontal(|ui| {
-                ui.label("Your name (comments):");
+                ui.label(crate::i18n::tr("Your name (comments):"));
                 ui.text_edit_singleline(&mut app.session.prefs.author);
             });
             let (ok, _) = buttons(ui, "Done");
             ok
         }
         _ => {
-            ui.label(format!("“{}” is not available yet.", d.id));
+            ui.label(crate::i18n::format("“{}” is not available yet.", std::slice::from_ref(&d.id)));
             let (ok, cancel) = buttons(ui, "OK");
             ok || cancel
         }
@@ -791,17 +833,21 @@ pub fn about(_app: &mut SlideApp, ui: &mut Ui) {
     ui.vertical_centered(|ui| {
         let (r, _) = ui.allocate_exact_size(vec2(64.0, 64.0), Sense::hover());
         paint_logo(ui.painter(), r);
-        ui.label(egui::RichText::new("DeckCraft").font(theme::bold(22.0)));
+        ui.label(egui::RichText::new(crate::i18n::tr("DeckCraft")).font(theme::bold(22.0)));
         ui.label(egui::RichText::new(version_line()).color(t.text_dim));
         ui.add_space(6.0);
-        ui.label("Presentations and slide shows, rebuilt from scratch in pure Rust.");
-        ui.label("An open-source, clean-room project. Not affiliated with Microsoft.");
+        ui.label(crate::i18n::tr("Presentations and slide shows, rebuilt from scratch in pure Rust."));
+        ui.label(crate::i18n::tr("An open-source, clean-room project. Not affiliated with Microsoft."));
         ui.add_space(6.0);
-        ui.hyperlink_to("Join our community on Discord", deckcraft_engine::links::DISCORD);
+        ui.hyperlink_to(crate::i18n::tr("Join our community on Discord"), deckcraft_engine::links::DISCORD);
         ui.hyperlink_to("getartcraft.com/apps/deckcraft", deckcraft_engine::links::APP_PAGE);
-        ui.hyperlink_to("Source on GitHub", deckcraft_engine::links::GITHUB);
+        ui.hyperlink_to(crate::i18n::tr("Source on GitHub"), deckcraft_engine::links::GITHUB);
         ui.add_space(6.0);
-        ui.label(egui::RichText::new("MIT OR Apache-2.0 · © 2026 ArtCraft Team and the DeckCraft contributors").size(11.0).color(t.text_faint));
+        ui.label(
+            egui::RichText::new(crate::i18n::tr("MIT OR Apache-2.0 · © 2026 ArtCraft Team and the DeckCraft contributors"))
+                .size(11.0)
+                .color(t.text_faint),
+        );
     });
 }
 
@@ -809,7 +855,7 @@ pub fn about(_app: &mut SlideApp, ui: &mut Ui) {
 /// from `[workspace.package] version` (the single source of truth, `cargo xtask version`); the
 /// release workflow sets `DECKCRAFT_BUILD_SHA` / `DECKCRAFT_BUILD_DATE` at build time.
 pub fn version_line() -> String {
-    let mut s = format!("Version {}", env!("CARGO_PKG_VERSION"));
+    let mut s = crate::i18n::format("Version {}", &[(env!("CARGO_PKG_VERSION")).to_string()]);
     let sha = option_env!("DECKCRAFT_BUILD_SHA").map(|s| s.get(..9).unwrap_or(s)).filter(|s| !s.is_empty());
     let date = option_env!("DECKCRAFT_BUILD_DATE").filter(|s| !s.is_empty());
     match (sha, date) {
@@ -845,7 +891,7 @@ pub fn start_screen(app: &mut SlideApp, ui: &mut Ui) {
             ui.add_space(40.0);
             let (r, _) = ui.allocate_exact_size(vec2(40.0, 40.0), Sense::hover());
             paint_logo(ui.painter(), r);
-            ui.label(egui::RichText::new("DeckCraft").font(theme::bold(26.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("DeckCraft")).font(theme::bold(26.0)));
         });
         if app.home_open() {
             let title = app.session.active().map(|d| d.title()).unwrap_or_default();
@@ -860,7 +906,7 @@ pub fn start_screen(app: &mut SlideApp, ui: &mut Ui) {
         ui.add_space(16.0);
         ui.horizontal(|ui| {
             ui.add_space(40.0);
-            ui.label(egui::RichText::new("New presentation").font(theme::bold(16.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("New presentation")).font(theme::bold(16.0)));
         });
         ui.add_space(8.0);
         inset_wrapped(ui, |ui| {
@@ -880,10 +926,10 @@ pub fn start_screen(app: &mut SlideApp, ui: &mut Ui) {
         ui.add_space(16.0);
         ui.horizontal(|ui| {
             ui.add_space(40.0);
-            if ui.button("Open…").clicked() {
+            if ui.button(crate::i18n::tr("Open…")).clicked() {
                 let _ = app.run("app.openDialog", json!({}));
             }
-            if ui.button("Open the sample deck").clicked()
+            if ui.button(crate::i18n::tr("Open the sample deck")).clicked()
                 && let Err(e) = deckcraft_engine::sample::open_sample(&mut app.session)
             {
                 app.set_status(e.to_string());
@@ -893,7 +939,7 @@ pub fn start_screen(app: &mut SlideApp, ui: &mut Ui) {
             ui.add_space(16.0);
             ui.horizontal(|ui| {
                 ui.add_space(40.0);
-                ui.label(egui::RichText::new("Recent").font(theme::bold(16.0)));
+                ui.label(egui::RichText::new(crate::i18n::tr("Recent")).font(theme::bold(16.0)));
             });
             for p in app.ui.recent.clone() {
                 ui.horizontal(|ui| {
@@ -909,7 +955,7 @@ pub fn start_screen(app: &mut SlideApp, ui: &mut Ui) {
         ui.add_space(30.0);
         ui.horizontal(|ui| {
             ui.add_space(40.0);
-            ui.hyperlink_to("Join the ArtCraft community on Discord", deckcraft_engine::links::DISCORD);
+            ui.hyperlink_to(crate::i18n::tr("Join the ArtCraft community on Discord"), deckcraft_engine::links::DISCORD);
         });
     });
 }
diff --git a/crates/ui-egui/src/fillui.rs b/crates/ui-egui/src/fillui.rs
index 7f0f7d197..0fe0c1feb 100644
--- a/crates/ui-egui/src/fillui.rs
+++ b/crates/ui-egui/src/fillui.rs
@@ -109,7 +109,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
     let mut sel: usize = ui.data_mut(|d| d.get_temp(sel_id).unwrap_or(0)).min(g.stops.len().saturating_sub(1));
 
     // Preset variations of the first stop's colour.
-    ui.label("Preset gradients");
+    ui.label(crate::i18n::tr("Preset gradients"));
     ui.horizontal_wrapped(|ui| {
         let base = g.stops.first().map(|s| s.color.clone()).unwrap_or(ColorRef::scheme(SchemeSlot::Accent1));
         let mut light = base.clone();
@@ -165,7 +165,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
         GradientShape::Path { .. } => "Radial",
     };
     ui.horizontal(|ui| {
-        ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Type"));
+        ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Type")));
         egui::ComboBox::from_id_salt((id, "kind")).selected_text(kind).width(120.0).show_ui(ui, |ui| {
             for k in ["Linear", "Radial", "Rectangular", "Path"] {
                 if ui.selectable_label(kind == k, k).clicked() && kind != k {
@@ -185,12 +185,12 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
         });
     });
     ui.horizontal_wrapped(|ui| {
-        ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Direction"));
+        ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Direction")));
         match &g.shape {
             GradientShape::Linear { angle, .. } => {
                 for (l, a) in DIRECTIONS_LINEAR {
                     let on = (angle - a).abs() < 0.5;
-                    if ui.selectable_label(on, l).on_hover_text(format!("{a}°")).clicked() {
+                    if ui.selectable_label(on, crate::i18n::tr(l)).on_hover_text(format!("{a}°")).clicked() {
                         out = Some(Gradient { shape: GradientShape::Linear { angle: a, scaled: false }, ..g.clone() });
                     }
                 }
@@ -198,7 +198,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
             GradientShape::Path { path, focus } => {
                 for (l, f) in DIRECTIONS_PATH {
                     let on = focus.iter().zip(f).all(|(a, b)| (a - b).abs() < 1e-3);
-                    if ui.selectable_label(on, l.trim_start_matches("From ")).on_hover_text(l).clicked() {
+                    if ui.selectable_label(on, l.trim_start_matches("From ")).on_hover_text(crate::i18n::tr(l)).clicked() {
                         out = Some(Gradient { shape: GradientShape::Path { path: path.clone(), focus: f }, ..g.clone() });
                     }
                 }
@@ -207,7 +207,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
     });
     if let GradientShape::Linear { angle, .. } = &g.shape {
         ui.horizontal(|ui| {
-            ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Angle"));
+            ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Angle")));
             if let Some(a) = widgets::spinner(ui, &format!("{id}-angle"), *angle, 15.0, "°", 70.0) {
                 out = Some(Gradient { shape: GradientShape::Linear { angle: a.rem_euclid(360.0), scaled: false }, ..g.clone() });
             }
@@ -216,7 +216,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
 
     // Stop bar: click to add, drag a stop to move it.
     ui.add_space(4.0);
-    ui.label("Gradient stops");
+    ui.label(crate::i18n::tr("Gradient stops"));
     let (bar, bar_resp) = ui.allocate_exact_size(vec2(ui.available_width().min(260.0), 18.0), Sense::click());
     paint_bar(ui, bar, g, sc);
     let (marks, _) = ui.allocate_exact_size(vec2(bar.width(), 14.0), Sense::hover());
@@ -272,7 +272,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
     // The selected stop.
     if let Some(s) = g.stops.get(sel) {
         ui.horizontal(|ui| {
-            ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Color"));
+            ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Color")));
             let (sw, _) = ui.allocate_exact_size(vec2(18.0, 18.0), Sense::hover());
             ui.painter().rect(sw, CornerRadius::same(3), c32(&s.color, sc), Stroke::new(1.0, t.border), egui::StrokeKind::Inside);
             let r = widgets::drop_button(ui, "", vec2(24.0, 20.0), true);
@@ -284,7 +284,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
                 }
             });
             let can_remove = g.stops.len() > 2;
-            if ui.add_enabled(can_remove, egui::Button::new("Remove stop")).clicked() {
+            if ui.add_enabled(can_remove, egui::Button::new(crate::i18n::tr("Remove stop"))).clicked() {
                 let mut ng = g.clone();
                 ng.stops.remove(sel);
                 sel = sel.saturating_sub(1);
@@ -292,7 +292,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
             }
         });
         ui.horizontal(|ui| {
-            ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Position"));
+            ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Position")));
             if let Some(v) = widgets::spinner(ui, &format!("{id}-pos-{sel}"), (s.pos * 100.0).round(), 5.0, "%", 70.0) {
                 let mut ng = g.clone();
                 ng.stops[sel].pos = (v / 100.0).clamp(0.0, 1.0);
@@ -301,7 +301,7 @@ pub fn gradient_editor(ui: &mut Ui, id: &str, g: &Gradient, sc: &ColorScheme) ->
             }
         });
         ui.horizontal(|ui| {
-            ui.add_sized(vec2(70.0, 20.0), egui::Label::new("Transparency"));
+            ui.add_sized(vec2(70.0, 20.0), egui::Label::new(crate::i18n::tr("Transparency")));
             let key = ui.id().with((id, "tr", sel));
             let mut tr: f32 = ui.data_mut(|d| d.get_temp(key).unwrap_or(((1.0 - alpha_of(&s.color)) * 100.0) as f32));
             let r = ui.add(egui::Slider::new(&mut tr, 0.0..=100.0).suffix("%"));
diff --git a/crates/ui-egui/src/i18n.rs b/crates/ui-egui/src/i18n.rs
new file mode 100644
index 000000000..897de0669
--- /dev/null
+++ b/crates/ui-egui/src/i18n.rs
@@ -0,0 +1,447 @@
+//! Interface text only: presentation content, file names and command identifiers stay intact.
+
+use std::cell::Cell;
+use std::collections::HashMap;
+use std::sync::OnceLock;
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub enum Language {
+    #[default]
+    System,
+    En,
+    Uk,
+    PtBr,
+}
+
+impl Language {
+    pub const ALL: [Self; 4] = [Self::System, Self::En, Self::Uk, Self::PtBr];
+
+    pub fn label(self) -> &'static str {
+        match self {
+            Self::System => tr("System language"),
+            Self::En => "English",
+            Self::Uk => "Українська",
+            Self::PtBr => "Português (Brasil)",
+        }
+    }
+
+    /// The `app.language` code and the saved preference value.
+    pub fn code(self) -> &'static str {
+        match self {
+            Self::System => "system",
+            Self::En => "en",
+            Self::Uk => "uk",
+            Self::PtBr => "pt-BR",
+        }
+    }
+
+    pub fn from_locale(locale: &str) -> Self {
+        let language = locale.split(['-', '_', '.', '@']).next().unwrap_or("");
+        if language.eq_ignore_ascii_case("uk") {
+            Self::Uk
+        } else if language.eq_ignore_ascii_case("pt") {
+            Self::PtBr
+        } else {
+            Self::En
+        }
+    }
+
+    pub fn resolve(self, locale: Option<&str>) -> Self {
+        if self == Self::System { Self::from_locale(locale.unwrap_or("")) } else { self }
+    }
+}
+
+thread_local! {
+    static CURRENT: Cell<Language> = const { Cell::new(Language::En) };
+}
+
+pub fn current() -> Language {
+    CURRENT.get()
+}
+
+pub fn set_current(language: Language) {
+    CURRENT.set(language);
+}
+
+const UK_SOURCE: &str = include_str!("i18n/uk.tsv");
+const PT_BR_SOURCE: &str = include_str!("i18n/pt-br.tsv");
+static UK: OnceLock<HashMap<String, String>> = OnceLock::new();
+static PT_BR: OnceLock<HashMap<String, String>> = OnceLock::new();
+
+fn parse(source: &str) -> HashMap<String, String> {
+    source
+        .lines()
+        .filter(|line| !line.is_empty() && !line.starts_with('#'))
+        .filter_map(|line| line.split_once('\t'))
+        .map(|(source, text)| (source.replace("\\n", "\n"), text.replace("\\n", "\n")))
+        .collect()
+}
+
+/// The catalog of a language that has one. English — and a `System` preference before it resolves —
+/// has none, so its text stays as written.
+pub fn catalog(language: Language) -> Option<&'static HashMap<String, String>> {
+    match language {
+        Language::Uk => Some(UK.get_or_init(|| parse(UK_SOURCE))),
+        Language::PtBr => Some(PT_BR.get_or_init(|| parse(PT_BR_SOURCE))),
+        _ => None,
+    }
+}
+
+fn active_catalog() -> Option<&'static HashMap<String, String>> {
+    catalog(CURRENT.get())
+}
+
+/// Exact lookup at an explicit interface boundary; unknown text falls back to English.
+pub fn tr(text: &str) -> &str {
+    active_catalog().and_then(|c| c.get(text)).map(String::as_str).unwrap_or(text)
+}
+
+/// Context-specific interface label with the original English source as fallback.
+pub fn tr_context<'a>(source: &'a str, key: &str) -> &'a str {
+    active_catalog().and_then(|c| c.get(key)).map(String::as_str).unwrap_or(source)
+}
+
+pub fn placeholder_prompt(kind: deckcraft_model::PhType) -> &'static str {
+    tr(kind.prompt())
+}
+
+/// Substitute already-formatted values without interpreting their contents as interface text.
+pub fn format(source: &str, values: &[String]) -> String {
+    let text = tr(source);
+    let mut out = String::new();
+    let mut rest = text;
+    let mut index = 0;
+    while let Some(start) = rest.find('{') {
+        out.push_str(rest.get(..start).unwrap_or(""));
+        let tail = rest.get(start + 1..).unwrap_or("");
+        if let Some(after) = tail.strip_prefix('{') {
+            out.push('{');
+            rest = after;
+        } else if let Some(end) = tail.find('}') {
+            out.push_str(values.get(index).map(String::as_str).unwrap_or(""));
+            index += 1;
+            rest = tail.get(end + 1..).unwrap_or("");
+        } else {
+            out.push_str(rest);
+            return out;
+        }
+    }
+    out.push_str(&rest.replace("}}", "}"));
+    out
+}
+
+/// Integer count of a noun. `english` is the English form the caller already chose; `uk` carries the
+/// three Ukrainian forms (`one|few|many`) and `pt` the two Portuguese forms (`one|other`), both
+/// pipe-separated. A language without forms of its own falls back to English.
+pub fn count(n: usize, english: &str, uk: &str, pt: &str) -> String {
+    let selected = match CURRENT.get() {
+        Language::Uk => Some((
+            uk,
+            match (n % 10, n % 100) {
+                (1, last) if last != 11 => 0,
+                (2..=4, last) if !(12..=14).contains(&last) => 1,
+                _ => 2,
+            },
+        )),
+        Language::PtBr => Some((pt, usize::from(n > 1))),
+        _ => None,
+    };
+    let word = selected.and_then(|(forms, index)| forms.split('|').nth(index)).unwrap_or(english);
+    format!("{n} {word}")
+}
+
+/// Recovery notice includes the Ukrainian accusative forms and the Portuguese ones.
+pub fn recovered(n: usize) -> String {
+    let amount = count(
+        n,
+        if n == 1 { "unsaved presentation" } else { "unsaved presentations" },
+        "незбережену презентацію|незбережені презентації|незбережених презентацій",
+        "apresentação não salva|apresentações não salvas",
+    );
+    format("Recovered {} from the last session", &[amount])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn placeholders(text: &str) -> Vec<&str> {
+        let mut out = vec![];
+        let mut rest = text;
+        while let Some((_, tail)) = rest.split_once('{') {
+            if let Some(tail) = tail.strip_prefix('{') {
+                rest = tail;
+                continue;
+            }
+            if let Some((field, tail)) = tail.split_once('}') {
+                out.push(field);
+                rest = tail;
+            } else {
+                break;
+            }
+        }
+        out
+    }
+
+    #[test]
+    fn all_command_menu_and_gallery_labels_are_translated() {
+        let mut required = vec![];
+        required.extend(crate::UI_COMMANDS.iter().map(|c| c.1));
+        required.extend(deckcraft_engine::Session::new().commands().into_iter().map(|c| c.label));
+        for (menu, items) in crate::menus::menu_tree() {
+            required.push(menu);
+            required.extend(items.into_iter().filter(|(label, _)| *label != "-").map(|(label, _)| label));
+        }
+        required.extend(deckcraft_geom::preset::CATALOG.iter().map(|shape| shape.label));
+        required.extend(deckcraft_geom::preset::Category::ALL.iter().map(|category| category.label()));
+        required.extend(deckcraft_model::anim::ANIMATIONS.iter().map(|effect| effect.1));
+        required.extend(deckcraft_model::anim::TRANSITIONS.iter().flat_map(|effect| [effect.1, effect.2]));
+        required.extend(deckcraft_model::chart::ChartType::MAIN.iter().map(|kind| kind.label()));
+        required.extend(deckcraft_model::defaults::SLIDE_SIZES.iter().map(|size| size.0));
+        required.extend(deckcraft_color::STANDARD_COLORS.iter().map(|color| color.1));
+        required.extend(deckcraft_color::SchemeSlot::THEME.iter().map(|slot| slot.label()));
+        required.extend(["@ribbon:Home", "@ribbon:Insert"]);
+        for language in [Language::Uk, Language::PtBr] {
+            let catalog = catalog(language).unwrap();
+            for option in deckcraft_model::anim::TRANSITIONS
+                .iter()
+                .flat_map(|effect| effect.4)
+                .chain(deckcraft_model::anim::ANIMATIONS.iter().flat_map(|effect| effect.5))
+            {
+                let label = crate::ribbon::option_label(option);
+                if !label.is_empty() && !label.chars().all(|c| c.is_ascii_digit()) {
+                    assert!(catalog.contains_key(&label), "{language:?}: missing effect option: {option}: {label}");
+                }
+            }
+            let missing: Vec<_> = required.iter().filter(|key| !catalog.contains_key(**key)).collect();
+            assert!(missing.is_empty(), "{language:?}: missing visible metadata: {missing:?}");
+        }
+    }
+
+    /// Every literal passed to `i18n::tr` / `i18n::format` in the UI crates and the apps.
+    fn literal_translation_keys() -> Vec<String> {
+        let mut keys = vec![];
+        for source in [
+            include_str!("canvas.rs"),
+            include_str!("credits.rs"),
+            include_str!("dialogs.rs"),
+            include_str!("fillui.rs"),
+            include_str!("lib.rs"),
+            include_str!("media.rs"),
+            include_str!("menus.rs"),
+            include_str!("panes.rs"),
+            include_str!("ribbon.rs"),
+            include_str!("show.rs"),
+            include_str!("sorter.rs"),
+            include_str!("status.rs"),
+            include_str!("thumbs.rs"),
+            include_str!("widgets.rs"),
+            include_str!("../../../apps/deckcraft/src/main.rs"),
+            include_str!("../../../apps/deckcraft-web/src/web.rs"),
+        ] {
+            for prefix in ["i18n::tr(\"", "i18n::format(\""] {
+                let mut rest = source.split("#[cfg(test)]").next().unwrap_or(source);
+                while let Some((_, tail)) = rest.split_once(prefix) {
+                    let mut escaped = false;
+                    let end = tail
+                        .char_indices()
+                        .find_map(|(index, c)| {
+                            if escaped {
+                                escaped = false;
+                                None
+                            } else if c == '\\' {
+                                escaped = true;
+                                None
+                            } else if c == '\"' {
+                                Some(index)
+                            } else {
+                                None
+                            }
+                        })
+                        .unwrap();
+                    let key: String = serde_json::from_str(&format!("\"{}\"", &tail[..end])).unwrap();
+                    keys.push(key);
+                    rest = &tail[end + 1..];
+                }
+            }
+        }
+        keys
+    }
+
+    #[test]
+    fn every_literal_translation_call_has_a_catalog_entry() {
+        for language in [Language::Uk, Language::PtBr] {
+            let catalog = catalog(language).unwrap();
+            for key in literal_translation_keys() {
+                assert!(catalog.contains_key(&key), "{language:?}: missing literal translation: {key}");
+            }
+        }
+    }
+
+    #[test]
+    fn language_command_keeps_document_data_and_identifiers_intact() {
+        let mut app = crate::SlideApp::new(deckcraft_engine::Session::new(), crate::Services::default());
+        app.run("file.new", serde_json::json!({})).unwrap();
+        app.run("insert.textBox", serde_json::json!({"text": "File {customer} / Звіт", "rect": [1, 2, 100, 40]})).unwrap();
+        let before = serde_json::to_value(&app.session.active().unwrap().doc).unwrap();
+        app.run("app.language", serde_json::json!({"language": "uk"})).unwrap();
+        assert_eq!(app.ui.interface_language, Language::Uk);
+        assert_eq!(tr("File"), "Файл");
+        assert_eq!(before, serde_json::to_value(&app.session.active().unwrap().doc).unwrap());
+        assert!(app.run("app.language", serde_json::json!({"language": "invalid"})).is_err());
+        assert_eq!(app.ui.interface_language, Language::Uk);
+        set_current(Language::En);
+    }
+
+    #[test]
+    fn bundled_ui_fonts_cover_the_ukrainian_alphabet_without_system_fonts() {
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let mut output = ctx.run_ui(egui::RawInput::default(), |ui| {
+            for family in [egui::FontFamily::Proportional, egui::FontFamily::Name("bold".into()), egui::FontFamily::Monospace] {
+                // egui 0.36 has_glyph() can report a valid fallback face as a replacement.
+                // Check the configured fallback and its actual font charmap below instead.
+                let fallback_installed = ui.ctx().fonts_mut(|fonts| {
+                    fonts.definitions().families.get(&family).is_some_and(|names| names.iter().any(|name| name == "Ubuntu-Light"))
+                });
+                assert!(fallback_installed, "missing bundled Ukrainian fallback in {family:?}");
+            }
+        });
+        output.textures_delta.clear();
+        let db = deckcraft_fonts::FontDb::with_font_dirs(vec![]);
+        let face = db.face(deckcraft_fonts::LAST_RESORT_FAMILY, "Regular");
+        let letters: std::collections::HashSet<_> = catalog(Language::Uk)
+            .unwrap()
+            .values()
+            .flat_map(|value| value.chars())
+            .chain("ҐґЄєІіЇї".chars())
+            .filter(|c| ('\u{0400}'..='\u{04ff}').contains(c))
+            .collect();
+        for c in letters {
+            assert_ne!(face.glyph_for(c), 0, "missing document fallback glyph: {c}");
+        }
+    }
+
+    #[test]
+    fn brazilian_portuguese_lookup_counts_and_fallbacks() {
+        set_current(Language::PtBr);
+        assert_eq!(tr("File"), "Arquivo");
+        assert_eq!(tr("Insert"), "Inserir");
+        assert_eq!(tr_context("Insert", "@ribbon:Insert"), "Inserir");
+        assert_eq!(tr("a user-defined slide title"), "a user-defined slide title");
+        assert_eq!(count(1, "slide", "слайд|слайди|слайдів", "slide|slides"), "1 slide");
+        assert_eq!(count(3, "slides", "слайд|слайди|слайдів", "slide|slides"), "3 slides");
+        for (n, word) in
+            [(0, "apresentação não salva"), (1, "apresentação não salva"), (2, "apresentações não salvas"), (11, "apresentações não salvas")]
+        {
+            let text = recovered(n);
+            assert!(text.contains(word), "{n}: {text}");
+        }
+        set_current(Language::En);
+        assert_eq!(tr("File"), "File");
+    }
+
+    #[test]
+    fn bundled_document_font_covers_the_brazilian_portuguese_catalog() {
+        let db = deckcraft_fonts::FontDb::with_font_dirs(vec![]);
+        let face = db.face(deckcraft_fonts::LAST_RESORT_FAMILY, "Regular");
+        let letters: std::collections::HashSet<_> =
+            catalog(Language::PtBr).unwrap().values().flat_map(|value| value.chars()).filter(|c| ('\u{00c0}'..='\u{00ff}').contains(c)).collect();
+        for c in letters {
+            assert_ne!(face.glyph_for(c), 0, "missing document fallback glyph: {c}");
+        }
+    }
+
+    // An explicit local visual check; the generated PNGs stay outside the repository.
+    #[test]
+    #[ignore = "writes translation review screenshots; run explicitly with DECKCRAFT_I18N_SHOTS"]
+    fn ukrainian_interface_preview() {
+        let dir = std::env::var("DECKCRAFT_I18N_SHOTS").unwrap();
+        std::fs::create_dir_all(&dir).unwrap();
+        for (code, language) in [("en", Language::En), ("uk", Language::Uk), ("pt-BR", Language::PtBr)] {
+            for (name, dialog) in [("editor", None), ("preferences", Some("preferences")), ("table", Some("table"))] {
+                let mut app = crate::SlideApp::new(deckcraft_engine::Session::new(), crate::Services::default());
+                app.run("file.new", serde_json::json!({})).unwrap();
+                app.ui.interface_language = language;
+                app.dialog = dialog.map(crate::dialogs::Dialog::new);
+                let mut harness = egui_kittest::Harness::builder().with_size(egui::vec2(1440.0, 900.0)).build_ui(|ui| {
+                    app.logic(ui.ctx());
+                    app.ui(ui);
+                });
+                harness.run_steps(6);
+                harness.render().unwrap().save(format!("{dir}/{code}-{name}.png")).unwrap();
+            }
+        }
+        set_current(Language::En);
+    }
+
+    #[test]
+    fn locales_and_preferences_are_backward_compatible() {
+        for locale in ["uk", "uk-UA", "uk_UA.UTF-8", "UK_ua@euro"] {
+            assert_eq!(Language::from_locale(locale), Language::Uk);
+        }
+        for locale in ["", "en-US", "ru-UA", "ukrainian"] {
+            assert_eq!(Language::from_locale(locale), Language::En);
+        }
+        assert_eq!(Language::Uk.resolve(Some("en")), Language::Uk);
+        let old: crate::UiState = serde_json::from_str("{}").unwrap();
+        assert_eq!(old.interface_language, Language::System);
+        let mut ui = old;
+        ui.interface_language = Language::Uk;
+        let round_trip: crate::UiState = serde_json::from_str(&serde_json::to_string(&ui).unwrap()).unwrap();
+        assert_eq!(round_trip.interface_language, Language::Uk);
+    }
+
+    #[test]
+    fn catalogs_are_unique_complete_and_preserve_placeholders() {
+        for (code, source) in [("uk", UK_SOURCE), ("pt-BR", PT_BR_SOURCE)] {
+            let mut seen = std::collections::HashSet::new();
+            for (line_no, line) in source.lines().enumerate() {
+                if line.is_empty() || line.starts_with('#') {
+                    continue;
+                }
+                let (source, text) = line.split_once('\t').unwrap();
+                assert!(seen.insert(source), "{code}: duplicate on {}: {source}", line_no + 1);
+                assert!(!text.trim().is_empty(), "{code}: empty translation: {source}");
+                assert_eq!(placeholders(source), placeholders(text), "{code}: placeholder names/order/format: {source}");
+            }
+        }
+    }
+
+    #[test]
+    fn lookup_and_format_preserve_user_values_and_fallbacks() {
+        set_current(Language::Uk);
+        assert_eq!(tr("File"), "Файл");
+        assert_eq!(tr_context("Insert", "@ribbon:Insert"), "Вставлення");
+        assert_eq!(tr("Insert"), "Вставити");
+        assert_eq!(tr("a user-defined slide title"), "a user-defined slide title");
+        let user = "File {user} / Звіт.pptx".to_string();
+        assert!(format("Saved {path}", std::slice::from_ref(&user)).ends_with(&user));
+        set_current(Language::En);
+        assert_eq!(tr("File"), "File");
+    }
+
+    #[test]
+    fn ukrainian_integer_counts_cover_teens_and_large_values() {
+        set_current(Language::Uk);
+        for (n, word) in [
+            (0, "слайдів"),
+            (1, "слайд"),
+            (2, "слайди"),
+            (4, "слайди"),
+            (5, "слайдів"),
+            (11, "слайдів"),
+            (12, "слайдів"),
+            (14, "слайдів"),
+            (21, "слайд"),
+            (24, "слайди"),
+            (111, "слайдів"),
+        ] {
+            assert_eq!(count(n, "slides", "слайд|слайди|слайдів", "slide|slides"), format!("{n} {word}"));
+        }
+        set_current(Language::En);
+    }
+}
diff --git a/crates/ui-egui/src/i18n/pt-br.tsv b/crates/ui-egui/src/i18n/pt-br.tsv
new file mode 100644
index 000000000..49a640cf2
--- /dev/null
+++ b/crates/ui-egui/src/i18n/pt-br.tsv
@@ -0,0 +1,1235 @@
+# Brazilian Portuguese interface catalog. English source and translation separated by a tab;
+# \n denotes a line break.
+# Contributor-original translation, MIT OR Apache-2.0.
+  Fixed date (empty = update automatically):	  Data fixa (vazio = atualizar automaticamente):
+  Footer text:	  Texto do rodapé:
+  Present  	  Apresentar  
+ pt	 pt
+ — Edited	 — Editado
+"Not Allowed" Symbol	Símbolo "Proibido"
+% of all commits	% de todos os commits
++ New Comment	+ Novo comentário
++ New Slide	+ Novo slide
++ Row	+ Linha
++ Series	+ Série
++Bin	+bin.
+100% Stacked Bar	Barra 100% empilhada
+100% Stacked Column	Coluna 100% empilhada
+35mm Slides	Slides 35 mm
+@ribbon:Home	Início
+@ribbon:Insert	Inserir
+@{}: {} PRs, {} commits, +{} / −{} lines (Δ {}), +{} / −{} binary assets, {} – {}	@{}: {} PRs, {} commits, +{} / −{} linhas (Δ {}), +{} / −{} ativos binários, {} – {}
+A3 Paper (297x420 mm)	Papel A3 (297x420 mm)
+A4 Paper (210x297 mm)	Papel A4 (210x297 mm)
+Aa	Aa
+Abc	Abc
+About	Sobre
+About DeckCraft	Sobre o DeckCraft
+Accent 1	Realce 1
+Accent 2	Realce 2
+Accent 3	Realce 3
+Accent 4	Realce 4
+Accent 5	Realce 5
+Accent 6	Realce 6
+Accessibility Checker	Verificador de Acessibilidade
+Across	Sobre
+Action	Ação
+Action Button: Custom	Botão de ação: Personalizado
+Action Button: Document	Botão de ação: Documento
+Action Button: Get Information	Botão de ação: Obter informações
+Action Button: Go Back	Botão de ação: Voltar
+Action Button: Go Back or Previous	Botão de ação: Voltar ou anterior
+Action Button: Go Forward or Next	Botão de ação: Avançar ou próximo
+Action Button: Go Home	Botão de ação: Ir para o início
+Action Button: Go to Beginning	Botão de ação: Ir para o começo
+Action Button: Go to End	Botão de ação: Ir para o fim
+Action Button: Help	Botão de ação: Ajuda
+Action Button: Sound	Botão de ação: Som
+Action Button: Video	Botão de ação: Vídeo
+Action Button: {k}	Botão de ação: {k}
+Action Buttons	Botões de ação
+Add Animation	Adicionar animação
+Add Section	Adicionar seção
+Add\nAnimation	Adicionar\nAnimação
+Address:	Endereço:
+Adjust Shape	Ajustar forma
+After Previous	Após anterior
+After:	Depois:
+Airplane	Avião
+Align	Alinhar
+Align Bottom	Alinhar embaixo
+Align Center	Centralizar
+Align Left	Alinhar à esquerda
+Align Middle	Alinhar ao meio
+Align Right	Alinhar à direita
+Align Text	Alinhar texto
+Align Top	Alinhar em cima
+Alt Text	Texto Alt
+Alt+	Alt+
+Alt+F9	Alt+F9
+Alt\nText	Texto\nAlt
+An open-source, clean-room project. Not affiliated with Microsoft.	Um projeto de código aberto, clean-room. Sem vínculo com a Microsoft.
+Angle	Ângulo
+Animation Gallery	Galeria de animações
+Animation Pane	Painel de animação
+Animation Styles	Estilos de animação
+Animation\nPane	Painel de\nAnimação
+Animations	Animações
+Animation Painter	Pincel de animação
+Apply Animation	Aplicar animação
+Play/Pause GIF	Reproduzir/pausar GIF
+Animations on Slide	Animações no slide
+Appear	Aparecer
+Apply	Aplicar
+Apply To All	Aplicar a todos
+Apply to All	Aplicar a todos
+Apply\nTo All	Aplicar a\nTodos
+Arc	Arco
+Arcs	Arcos
+Area	Área
+Arrange	Organizar
+Arrow	Seta
+Arrow at end	Seta no fim
+Arrow at start	Seta no início
+Arrow: Bent	Seta: curva
+Arrow: Bent-Up	Seta: curva para cima
+Arrow: Chevron	Seta: divisa
+Arrow: Down	Seta: para baixo
+Arrow: Left	Seta: para a esquerda
+Arrow: Left-Right	Seta: esquerda-direita
+Arrow: Left-Right-Up	Seta: esquerda-direita-cima
+Arrow: Left-Up	Seta: esquerda-cima
+Arrow: Notched Right	Seta: direita entalhada
+Arrow: Pentagon	Seta: pentágono
+Arrow: Quad	Seta: quádrupla
+Arrow: Right	Seta: para a direita
+Arrow: Striped Right	Seta: direita listrada
+Arrow: U-Turn	Seta: retorno
+Arrow: Up	Seta: para cima
+Arrow: Up-Down	Seta: cima-baixo
+Arrows	Setas
+Arrows at both ends	Setas nas duas pontas
+As One Object	Como um único objeto
+Audio	Áudio
+Audio from File…	Áudio do arquivo…
+AutoCorrect as you type	Autocorreção ao digitar
+Autofit	Ajustar automaticamente
+Automatic	Automático
+B4 (ISO) Paper (250x353 mm)	Papel B4 (ISO) (250x353 mm)
+B5 (ISO) Paper (176x250 mm)	Papel B5 (ISO) (176x250 mm)
+Background	Plano de fundo
+Background Styles	Estilos de plano de fundo
+Background\nStyles	Estilos de\nPlano de fundo
+Backspace	Backspace
+Banded Columns	Colunas em faixas
+Banded Rows	Linhas em faixas
+Banner	Faixa
+Basic Cycle	Ciclo básico
+Basic List	Lista básica
+Basic Process	Processo básico
+Basic Shapes	Formas básicas
+Before text (in):	Antes do texto (pol):
+Bevel	Chanfro
+Binary assets added	Ativos binários adicionados
+Binary assets removed	Ativos binários removidos
+Black Left	Preto à esquerda
+Black Pen	Caneta preta
+Black Right	Preto à direita
+Blinds	Persianas
+Block Arc	Arco em bloco
+Block Arrows	Setas em bloco
+Blue	Azul
+Blue Pen	Caneta azul
+Bold	Negrito
+Bold Flash	Piscada em negrito
+Both	Ambos
+Bottom	Embaixo
+Bounce	Saltar
+Box	Caixa
+Box In	Caixa para dentro
+Box Out	Caixa para fora
+Box and Whisker	Caixa e bigodes
+Brightness	Brilho
+Brightness {:+}%	Brilho {:+}%
+Bring Forward	Trazer para frente
+Bring to Front	Trazer para a frente
+Bring\nForward	Trazer para\nFrente
+Browsed at a kiosk (full screen)	Exibido em quiosque (tela inteira)
+Browsed by an individual (window)	Exibido por uma pessoa (janela)
+Bubble	Balão
+Bullets	Marcadores
+Burst	Explosão
+By Paragraph	Por parágrafo
+Callout: Down Arrow	Balão: seta para baixo
+Callout: Left Arrow	Balão: seta para a esquerda
+Callout: Line	Balão: linha
+Callout: Right Arrow	Balão: seta para a direita
+Callout: Up Arrow	Balão: seta para cima
+Callouts	Balões
+Cameo	Camafeu
+Camera capture is not available yet	A captura pela câmera ainda não está disponível
+Cancel	Cancelar
+Capitalize Each Word	Colocar Em Maiúscula Cada Palavra
+Caps	Maiúsculas
+Center	Centralizar
+Centered	Centralizado
+Change Case	Alterar maiúsculas/minúsculas
+Change Chart Type	Alterar tipo de gráfico
+Change Picture	Alterar imagem
+Change Shape	Alterar forma
+Change\nChart Type	Alterar\nTipo de Gráfico
+Character Spacing	Espaçamento entre caracteres
+Characters	Caracteres
+Chart	Gráfico
+Chart Data	Dados do gráfico
+Chart Design	Design do gráfico
+Chart Elements	Elementos do gráfico
+Chart…	Gráfico…
+Check Accessibility	Verificar Acessibilidade
+Check\nAccessibility	Verificar\nAcessibilidade
+Checkerboard	Tabuleiro
+Chevron	Divisa
+Choose a SmartArt Graphic	Escolha um gráfico SmartArt
+Chord	Corda
+Circle	Círculo
+Circle In	Círculo para dentro
+Circle Out	Círculo para fora
+Clear All Formatting	Limpar toda a formatação
+Click a symbol to insert it at the insertion point.	Clique em um símbolo para inseri-lo no ponto de inserção.
+Click icon to add SmartArt graphic	Clique no ícone para adicionar um gráfico SmartArt
+Click icon to add chart	Clique no ícone para adicionar um gráfico
+Click icon to add media	Clique no ícone para adicionar mídia
+Click icon to add picture	Clique no ícone para adicionar uma imagem
+Click icon to add table	Clique no ícone para adicionar uma tabela
+Click to add first slide	Clique para adicionar o primeiro slide
+Click to add notes	Clique para adicionar anotações
+Click to add subtitle	Clique para adicionar subtítulo
+Click to add text	Clique para adicionar texto
+Click to add title	Clique para adicionar título
+Click to edit Master text styles	Clique para editar os estilos de texto do Mestre
+Click to edit Master title style	Clique para editar o estilo de título do Mestre
+Clock	Relógio
+Clockwise	Sentido horário
+Close	Fechar
+Close Master View	Fechar Modo de Exibição do Mestre
+Close\nMaster View	Fechar\nModo Mestre
+Cloud	Nuvem
+Clustered Bar	Barra agrupada
+Clustered Column	Coluna agrupada
+Cmd+	Cmd+
+Cmd+,	Cmd+,
+Cmd+-	Cmd+-
+Cmd+=	Cmd+=
+Cmd+F1	Cmd+F1
+Cmd+Shift+P	Cmd+Shift+P
+Collapse the Ribbon	Recolher a faixa de opções
+Color	Cor
+Color Pulse	Pulso de cor
+Colors	Cores
+Columns	Colunas
+Comb	Pente
+Combo	Combinação
+Command Palette	Paleta de comandos
+Comment	Comentário
+Comments	Comentários
+Commits	Commits
+Community Links	Links da comunidade
+Company	Empresa
+Complementary Color	Cor complementar
+Connect Shapes	Conectar formas
+Connection Sites	Pontos de conexão
+Connector: Curved	Conector: curvo
+Connector: Elbow	Conector: em cotovelo
+Connector: Elbow (one bend)	Conector: em cotovelo (uma curva)
+Content	Conteúdo
+Contrast	Contraste
+Contrast {:+}%	Contraste {:+}%
+Contributors	Colaboradores
+Conveyor	Esteira
+Copy	Copiar
+Corrections	Correções
+Couldn't save AutoRecover information: {e}	Não foi possível salvar as informações de AutoRecuperação: {e}
+Counter Clockwise	Sentido anti-horário
+Cover	Cobertura
+Create	Criar
+Crop	Recortar
+Crop 10% each side	Recortar 10% de cada lado
+Crop 20% each side	Recortar 20% de cada lado
+Crop to Shape	Recortar para a forma
+Cross	Cruz
+Crush	Esmagar
+Ctrl+	Ctrl+
+Cube	Cubo
+Currency	Moeda
+Curtains	Cortinas
+Custom	Personalizado
+Custom Path	Trajeto personalizado
+Custom Show	Apresentação personalizada
+Custom Show 1	Apresentação personalizada 1
+Custom Shows	Apresentações personalizadas
+Custom Slide Show	Apresentação de slides personalizada
+Custom\nShow	Apresentação\nPersonalizada
+Cut	Recortar
+Cylinder	Cilindro
+Dark Blue	Azul-escuro
+Dark Mode	Modo escuro
+Dark Red	Vermelho-escuro
+Dark appearance	Aparência escura
+Dark\nMode	Modo\nEscuro
+Darken	Escurecer
+Dash	Traço
+Dash Dot	Traço e ponto
+Dashes	Traços
+Database	Banco de dados
+Date	Data
+Date & Time	Data e hora
+Date &\nTime	Data e\nHora
+Date and Time	Data e hora
+Date and time	Data e hora
+Decagon	Decágono
+Decision	Decisão
+DeckCraft	DeckCraft
+Decrease Font Size	Diminuir tamanho da fonte
+Decrease List Level	Diminuir nível da lista
+Delay:	Atraso:
+Delete	Excluir
+Delete Columns	Excluir colunas
+Delete Comment	Excluir comentário
+Delete Layout	Excluir layout
+Delete Rows	Excluir linhas
+Delete Slide	Excluir slide
+Delete Table	Excluir tabela
+Delete Text	Excluir texto
+Desaturate	Dessaturar
+Deselect	Desmarcar
+Design	Design
+Design Ideas	Ideias de design
+Design\nIdeas	Ideias de\nDesign
+Deutsch	Deutsch
+Diagonal Stripe	Faixa diagonal
+Diamond	Losango
+Diamond In	Losango para dentro
+Diamond Out	Losango para fora
+Direction	Direção
+Disappear	Desaparecer
+Discard Recovered Presentations	Descartar apresentações recuperadas
+Display name	Nome de exibição
+Dissolve	Dissolver
+Dissolve In	Dissolver para dentro
+Dissolve Out	Dissolver para fora
+Distribute	Distribuir
+Distribute Columns	Distribuir colunas
+Distribute Horizontally	Distribuir horizontalmente
+Distribute Rows	Distribuir linhas
+Distribute Vertically	Distribuir verticalmente
+Division Sign	Sinal de divisão
+Do not Autofit	Não ajustar automaticamente
+Do you want to save the changes you made to {what}?	Deseja salvar as alterações feitas em {what}?
+Document	Documento
+Dodecagon	Dodecágono
+Don't Save	Não salvar
+Don't show on title slide	Não mostrar no slide de título
+Done	Concluído
+Donut	Rosca
+Doors	Portas
+Double Brace	Chave dupla
+Double Bracket	Colchete duplo
+Double Wave	Onda dupla
+Doughnut	Rosca
+Down	Para baixo
+Drape	Drapeado
+Draw	Desenhar
+Drop Shadow Rectangle	Retângulo com sombra projetada
+Duplicate	Duplicar
+Duplicate Selected Slides	Duplicar slides selecionados
+Duplicate Slide	Duplicar slide
+Duration:	Duração:
+Dynamic Content	Conteúdo dinâmico
+Edit	Editar
+Edit Alt Text…	Editar texto Alt…
+Edit Data	Editar dados
+Edit Shape	Editar forma
+Edit Text	Editar texto
+Edit the data: first row = series names, first column = categories.	Edite os dados: primeira linha = nomes das séries, primeira coluna = categorias.
+Edit\nData	Editar\nDados
+Edit\nShape	Editar\nForma
+Editing	Editando
+Effect Options	Opções de efeito
+Effect\nOptions	Opções de\nEfeito
+Effects	Efeitos
+Email Address	Endereço de e-mail
+Email address:	Endereço de e-mail:
+Emphasis	Ênfase
+End	Fim
+End Show	Encerrar apresentação
+End of slide show	Fim da apresentação de slides
+End of slide show, click to exit.	Fim da apresentação de slides, clique para sair.
+End trim (s):	Corte final (s):
+English (United Kingdom)	Inglês (Reino Unido)
+English (United States)	Inglês (Estados Unidos)
+Enter	Enter
+Entrance	Entrada
+Equals	Igual
+Equation	Equação
+Equation Shapes	Formas de equação
+Eraser	Borracha
+Escape	Esc
+Español	Español
+Exciting	Empolgante
+Exit	Sair
+Expand	Expandir
+Explosion: 14 Points	Explosão: 14 pontas
+Explosion: 8 Points	Explosão: 8 pontas
+Export	Exportar
+Export the presentation as:	Exportar a apresentação como:
+Exported {path}	Exportado {path}
+Export…	Exportar…
+Fade	Esmaecer
+Fade in (s):	Esmaecer entrada (s):
+Fade out (s):	Esmaecer saída (s):
+Fall Over	Tombar
+Ferris Wheel	Roda-gigante
+File	Arquivo
+Fill	Preenchimento
+Fill & Line	Preenchimento e linha
+Fill Color	Cor do preenchimento
+Filled Radar	Radar preenchido
+Find…	Localizar…
+First	Primeiro
+First Column	Primeira coluna
+First Slide	Primeiro slide
+First commit	Primeiro commit
+Fit	Ajustar
+Fit slide to current window	Ajustar slide à janela atual
+Fit to Window	Ajustar à janela
+Fit to\nWindow	Ajustar à\nJanela
+Flash	Flash
+Flip	Inverter
+Flip Horizontal	Inverter horizontalmente
+Flip Vertical	Inverter verticalmente
+Float In	Flutuar para dentro
+Float Out	Flutuar para fora
+Flowchart	Fluxograma
+Flowchart: Alternate Process	Fluxograma: processo alternativo
+Flowchart: Card	Fluxograma: cartão
+Flowchart: Collate	Fluxograma: intercalar
+Flowchart: Connector	Fluxograma: conector
+Flowchart: Data	Fluxograma: dados
+Flowchart: Decision	Fluxograma: decisão
+Flowchart: Delay	Fluxograma: atraso
+Flowchart: Direct Access Storage	Fluxograma: armazenamento de acesso direto
+Flowchart: Display	Fluxograma: exibição
+Flowchart: Document	Fluxograma: documento
+Flowchart: Extract	Fluxograma: extrair
+Flowchart: Internal Storage	Fluxograma: armazenamento interno
+Flowchart: Magnetic Disk	Fluxograma: disco magnético
+Flowchart: Manual Input	Fluxograma: entrada manual
+Flowchart: Manual Operation	Fluxograma: operação manual
+Flowchart: Merge	Fluxograma: mesclar
+Flowchart: Multidocument	Fluxograma: multidocumento
+Flowchart: Off-page Connector	Fluxograma: conector fora da página
+Flowchart: Or	Fluxograma: ou
+Flowchart: Predefined Process	Fluxograma: processo predefinido
+Flowchart: Preparation	Fluxograma: preparação
+Flowchart: Process	Fluxograma: processo
+Flowchart: Punched Tape	Fluxograma: fita perfurada
+Flowchart: Sequential Access Storage	Fluxograma: armazenamento de acesso sequencial
+Flowchart: Sort	Fluxograma: classificar
+Flowchart: Stored Data	Fluxograma: dados armazenados
+Flowchart: Summing Junction	Fluxograma: junção de soma
+Flowchart: Terminator	Fluxograma: terminador
+Fly In	Voar para dentro
+Fly Out	Voar para fora
+Fly Through	Voar através
+Folded Corner	Canto dobrado
+Follow the layout	Seguir o layout
+Followed Hyperlink	Hiperlink visitado
+Font	Fonte
+Font Color	Cor da fonte
+Font Size	Tamanho da fonte
+Fonts	Fontes
+Footer	Rodapé
+Foreground	Primeiro plano
+Format	Formatar
+Format Background	Formatar plano de fundo
+Format Background…	Formatar plano de fundo…
+Format Painter	Pincel de formatação
+Format Painter (double-click to keep it on)	Pincel de formatação (clique duas vezes para manter ativo)
+Format Pane	Painel de formatação
+Format Shape	Formatar forma
+Format Shape…	Formatar forma…
+Format\nBackground	Formatar\nPlano de Fundo
+Format\nPane	Painel de\nFormatação
+Formatting State	Estado da formatação
+Fracture	Fragmentar
+Frame	Moldura
+Français	Français
+Freeform	Forma livre
+From 	De 
+From Beginning	Do começo
+From Bottom	De baixo
+From Bottom Left	Do canto inferior esquerdo
+From Bottom Right	Do canto inferior direito
+From Current Slide	Do slide atual
+From Left	Da esquerda
+From Right	Da direita
+From Top	De cima
+From Top Left	Do canto superior esquerdo
+From Top Right	Do canto superior direito
+From bottom left	Do canto inferior esquerdo
+From bottom right	Do canto inferior direito
+From center	Do centro
+From top left	Do canto superior esquerdo
+From top right	Do canto superior direito
+From\nBeginning	Do\nComeço
+From\nCurrent Slide	Do slide\nAtual
+Full	Completo
+Full Page Slides	Slides de página inteira
+Funnel	Funil
+Gallery	Galeria
+General	Geral
+Get Text	Obter texto
+Glitter	Purpurina
+Glow	Brilho
+Go to	Ir para
+Go to Slide	Ir para o slide
+Grab bag	Diversos
+Gradient fill	Preenchimento com gradiente
+Gradient stops	Paradas de gradiente
+Gradient…	Gradiente…
+Grayscale	Escala de cinza
+Greek	Grego
+Green	Verde
+Gridlines	Linhas de grade
+Group	Agrupar
+Group Objects	Agrupar objetos
+Grow & Turn	Crescer e girar
+Grow/Shrink	Crescer/reduzir
+Guides	Guias
+Half	Metade
+Half Frame	Meia moldura
+Handout Master	Mestre de folhetos
+Handout Master (coming soon)	Mestre de folhetos (em breve)
+Handout\nMaster	Mestre de\nFolhetos
+Handouts (1 slide per page)	Folhetos (1 slide por página)
+Handouts (2 slides per page)	Folhetos (2 slides por página)
+Handouts (3 slides per page)	Folhetos (3 slides por página)
+Handouts (4 slides per page)	Folhetos (4 slides por página)
+Handouts (6 slides per page)	Folhetos (6 slides por página)
+Handouts (9 slides per page)	Folhetos (9 slides por página)
+Header	Cabeçalho
+Header & Footer	Cabeçalho e rodapé
+Header &\nFooter	Cabeçalho e\nRodapé
+Header Row	Linha de cabeçalho
+Header and Footer	Cabeçalho e rodapé
+Header and Footer…	Cabeçalho e rodapé…
+Heart	Coração
+Height	Altura
+Height (in):	Altura (pol):
+Height:	Altura:
+Help	Ajuda
+Heptagon	Heptágono
+Hexagon	Hexágono
+Hide All	Ocultar tudo
+Hide Background Graphics	Ocultar elementos gráficos do plano de fundo
+Hide During Show	Ocultar durante a apresentação
+Hide Slide	Ocultar slide
+Hide background graphics	Ocultar elementos gráficos do plano de fundo
+Hide\nSlide	Ocultar\nSlide
+Hierarchy	Hierarquia
+High	Alta
+Highlighter	Marca-texto
+Histogram	Histograma
+Home	Início
+Honeycomb	Favo de mel
+Horizontal	Horizontal
+Horz In	Horiz. para dentro
+Horz Out	Horiz. para fora
+How would you describe this object and its context to someone who is blind or has low vision?	Como você descreveria este objeto e seu contexto para alguém cego ou com baixa visão?
+Hyperlink	Hiperlink
+Icons	Ícones
+In	Em
+In Bounce	Entrada com salto
+Include hidden slides	Incluir slides ocultos
+Increase Font Size	Aumentar tamanho da fonte
+Increase List Level	Aumentar nível da lista
+Ink to Math	Tinta em matemática
+Ink to Math (coming soon)	Tinta em matemática (em breve)
+Ink to Shape	Tinta em forma
+Ink to Shape (coming soon)	Tinta em forma (em breve)
+Ink to Text	Tinta em texto
+Ink to Text (coming soon)	Tinta em texto (em breve)
+Ink to\nMath	Tinta em\nMatemática
+Ink to\nShape	Tinta em\nForma
+Ink to\nText	Tinta em\nTexto
+Inner	Interno
+Insert	Inserir
+Insert Above	Inserir acima
+Insert Below	Inserir abaixo
+Insert Hyperlink	Inserir hiperlink
+Insert Layout	Inserir layout
+Insert Left	Inserir à esquerda
+Insert Placeholder	Inserir espaço reservado
+Insert Right	Inserir à direita
+Insert Table	Inserir tabela
+Insert Table…	Inserir tabela…
+Insert picture from file…	Inserir imagem do arquivo…
+Insert\nAbove	Inserir\nAcima
+Insert\nBelow	Inserir\nAbaixo
+Insert\nLayout	Inserir\nLayout
+Insert\nLeft	Inserir à\nEsquerda
+Insert\nPlaceholder	Inserir\nEspaço Reservado
+Insert\nRight	Inserir à\nDireita
+Inspect Presentation	Inspecionar apresentação
+Inspect Shape	Inspecionar forma
+Inspect Slide	Inspecionar slide
+Interface Language	Idioma da interface
+Interface language:	Idioma da interface:
+Interface size	Tamanho da interface
+Isosceles Triangle	Triângulo isósceles
+Italiano	Italiano
+Italic	Itálico
+JPEG image (current slide)	Imagem JPEG (slide atual)
+Join our community on Discord	Participe da nossa comunidade no Discord
+Join the ArtCraft community on Discord	Participe da comunidade ArtCraft no Discord
+Justify	Justificar
+L-Shape	Forma em L
+Language	Idioma
+Last	Último
+Last Column	Última coluna
+Last Slide	Último slide
+Last commit	Último commit
+Layout	Layout
+Learn More	Saiba mais
+Learn\nMore	Saiba\nMais
+Ledger Paper (11x17 in)	Papel Ofício (11x17 pol)
+Left	Esquerda
+Left Brace	Chave esquerda
+Left Bracket	Colchete esquerdo
+Letter Paper (8.5x11 in)	Papel Carta (8,5x11 pol)
+Liberation Serif	Liberation Serif
+Light Blue	Azul-claro
+Light Green	Verde-claro
+Light/Dark appearance	Aparência clara/escura
+Lighten	Clarear
+Lightning	Raio
+Lightning Bolt	Raio
+Line	Linha
+Line Color	Cor da linha
+Line Spacing	Espaçamento entre linhas
+Line Spacing Options…	Opções de espaçamento entre linhas…
+Line delta	Variação de linhas
+Line spacing (lines):	Espaçamento entre linhas (linhas):
+Line with Markers	Linha com marcadores
+Linear	Linear
+Lines	Linhas
+Lines +/−	Linhas +/−
+Lines added	Linhas adicionadas
+Lines deleted	Linhas excluídas
+Link	Link
+Link…	Link…
+List Commands	Listar comandos
+Lock	Bloquear
+Long Dash	Traço longo
+Long Dash Dot	Traço longo e ponto
+Loop continuously until 'Esc'	Repetir continuamente até 'Esc'
+Loop until Stopped	Repetir até parar
+Loops	Repetições
+Loose	Amplo
+Low	Baixa
+MIT OR Apache-2.0 · © 2026 ArtCraft Team and the DeckCraft contributors	MIT OR Apache-2.0 · © 2026 Equipe ArtCraft e os colaboradores do DeckCraft
+Margins (pt)	Margens (pt)
+Mark as decorative	Marcar como decorativo
+Mark selected text as:	Marcar o texto selecionado como:
+Math	Matemática
+Matrix	Matriz
+Maximize content (else ensure fit)	Maximizar conteúdo (senão, ajustar)
+Media	Mídia
+Media Info	Informações de mídia
+Medium	Médio
+Merge Cells	Mesclar células
+Merge Shapes	Mesclar formas
+Merge\nCells	Mesclar\nCélulas
+Merge\nShapes	Mesclar\nFormas
+Merged PRs	PRs mesclados
+Middle	Meio
+Minus Sign	Sinal de subtração
+Model	Modelo
+Models	Modelos
+Moon	Lua
+More Colors… #	Mais cores… #
+Morph	Morfar
+Motion	Movimento
+Motion Paths	Trajetos de animação
+Move	Mover
+Move Down	Mover para baixo
+Move Insertion Point	Mover ponto de inserção
+Move Section	Mover seção
+Move Section Down	Mover seção para baixo
+Move Section Up	Mover seção para cima
+Move Slide	Mover slide
+Move Up	Mover para cima
+Multiplication Sign	Sinal de multiplicação
+Multiply	Multiplicar
+Mute	Silenciar
+Name	Nome
+Name (A–Z)	Nome (A–Z)
+Name:	Nome:
+New Comment	Novo comentário
+New Presentation	Nova apresentação
+New Slide	Novo slide
+New Slide (⇧⌘N)	Novo slide (⇧⌘N)
+New presentation	Nova apresentação
+New show name:	Nome da nova apresentação:
+New\nComment	Novo\nComentário
+New\nSlide	Novo\nSlide
+Next	Próximo
+Next Slide	Próximo slide
+Next Window	Próxima janela
+Next ▶	Próximo ▶
+No Color	Sem cor
+No Fill	Sem preenchimento
+No Glow	Sem brilho
+No Outline	Sem contorno
+No Reflection	Sem reflexo
+No Shadow	Sem sombra
+No Soft Edges	Sem bordas suaves
+No accessibility issues found. People with disabilities should not have difficulty reading this document.	Nenhum problema de acessibilidade encontrado. Pessoas com deficiência não devem ter dificuldade para ler este documento.
+No comments on this slide.	Nenhum comentário neste slide.
+No contributor data was built into this copy.	Nenhum dado de colaboradores foi incluído nesta cópia.
+No fill	Sem preenchimento
+No line	Sem linha
+No model credits were built into this copy.	Nenhum crédito de modelo foi incluído nesta cópia.
+No notes.	Sem anotações.
+No sound: {err}	Sem som: {err}
+None	Nenhum
+Normal	Normal
+Not Equal	Diferente
+Not allowed	Não permitido
+Notes	Anotações
+Notes Master	Mestre de anotações
+Notes Master (coming soon)	Mestre de anotações (em breve)
+Notes Page	Página de anotações
+Notes Pages	Páginas de anotações
+Notes\nMaster	Mestre de\nAnotações
+Notes\nPage	Página de\nAnotações
+Nudge	Ajuste fino
+Number of columns:	Número de colunas:
+Number of rows:	Número de linhas:
+Numbering	Numeração
+Object Color	Cor do objeto
+Objects	Objetos
+Octagon	Octógono
+On Click	Ao clicar
+On Click of {name}	Ao clicar em {name}
+On Click of… (none)	Ao clicar em… (nenhum)
+On Mouse Click	Com clique do mouse
+On-screen Show (16:10)	Apresentação em tela (16:10)
+Open Data	Abrir dados
+Open Dialog	Abrir diálogo
+Open Recovered Presentations	Abrir apresentações recuperadas
+Open the sample deck	Abrir a apresentação de exemplo
+Open…	Abrir…
+Orange	Laranja
+Orbit	Órbita
+Order Objects	Ordenar objetos
+Origami	Origami
+Out	Para fora
+Out Bounce	Saída com salto
+Outer	Externo
+Outline	Contorno
+Outline (.txt)	Estrutura de tópicos (.txt)
+Outline View	Modo de estrutura de tópicos
+Outline\nView	Estrutura de\nTópicos
+Oval	Oval
+Oval ends	Pontas ovais
+Overhead	Transparência
+PDF document (.pdf)	Documento PDF (.pdf)
+PNG images (all slides)	Imagens PNG (todos os slides)
+PNG images (current slide)	Imagens PNG (slide atual)
+PRs	PRs
+Page Curl	Página virada
+Page Setup…	Configurar página…
+PageDown	PageDown
+PageUp	PageUp
+Pan	Panorâmica
+Pane	Painel
+Paragraph	Parágrafo
+Paragraph…	Parágrafo…
+Parallelogram	Paralelogramo
+Pareto	Pareto
+Partial Circle	Círculo parcial
+Particles	Partículas
+Paste	Colar
+Paste (⌘V)	Colar (⌘V)
+Paste Formatting	Colar formatação
+Paste and Match Formatting	Colar e corresponder à formatação
+Paste or type an outline. Unindented lines become slide titles; tab-indented lines become bullets.	Cole ou digite uma estrutura de tópicos. Linhas sem recuo viram títulos de slide; linhas com recuo de tabulação viram marcadores.
+Pasted image.png	Imagem colada.png
+Path	Trajeto
+Pattern fill	Preenchimento com padrão
+Pause	Pausar
+Peek In	Espiar para dentro
+Peel Off	Descascar
+Pencil	Lápis
+Pentagon	Pentágono
+Perspective	Perspectiva
+Pick a graphic; type one item per line.	Escolha um gráfico; digite um item por linha.
+Pick a look for your slides. Ideas are generated on your device.	Escolha um visual para os seus slides. As ideias são geradas no seu dispositivo.
+Picture	Imagem
+Picture Format	Formato da imagem
+Picture Styles	Estilos de imagem
+Picture from File…	Imagem do arquivo…
+Picture or texture fill	Preenchimento com imagem ou textura
+Picture\nStyles	Estilos de\nImagem
+Pictures	Imagens
+Pie	Pizza
+Pin	Fixar
+Placeholder colour	Cor do espaço reservado
+Plan\nBuild\nLaunch	Planejar\nConstruir\nLançar
+Plaque	Placa
+Play	Reproduzir
+Play Across Slides	Reproduzir em todos os slides
+Play Full Screen	Reproduzir em tela inteira
+Play Narrations	Reproduzir narrações
+Play from Current Slide	Reproduzir do slide atual
+Play from Start	Reproduzir do início
+Play from Start (F5)	Reproduzir do início (F5)
+Play from\nCurrent Slide	Reproduzir do\nSlide Atual
+Play from\nStart	Reproduzir do\nInício
+Play/Pause	Reproduzir/pausar
+Playback	Reprodução
+Plus	Mais
+Plus In	Mais para dentro
+Plus Out	Mais para fora
+Plus Sign	Sinal de adição
+Portrait (9:16)	Retrato (9:16)
+Português	Português
+Position	Posição
+Position Objects	Posicionar objetos
+Position and Size	Posição e tamanho
+Post	Publicação
+Poster Frame	Quadro de pôster
+PowerPoint Presentation (.pptx)	Apresentação do PowerPoint (.pptx)
+Preferences	Preferências
+Preferences…	Preferências…
+Presentation	Apresentação
+Presentations	Apresentações
+Presentations and slide shows, rebuilt from scratch in pure Rust.	Apresentações e exibições de slides, reconstruídas do zero em Rust puro.
+Presented by a speaker (full screen)	Apresentada por um orador (tela inteira)
+Presenter View	Modo de exibição do apresentador
+Presenter View — DeckCraft	Modo do apresentador — DeckCraft
+Presenter\nView	Modo de\nApresentador
+Preset gradients	Gradientes predefinidos
+Prestige	Prestígio
+Preview	Visualizar
+Previous Slide	Slide anterior
+Print layout:	Layout de impressão:
+Properties	Propriedades
+Pulse	Pulso
+Punctuation	Pontuação
+Purple	Roxo
+Push	Empurrar
+Pyramid	Pirâmide
+Quick Styles	Estilos rápidos
+Quick\nStyles	Estilos\nRápidos
+Radar	Radar
+Radial	Radial
+Random	Aleatório
+Random Bars	Barras aleatórias
+Reading View	Modo de leitura
+Reading\nView	Modo de\nLeitura
+Real name	Nome real
+Recent	Recente
+Record	Gravar
+Recording narration needs audio capture (coming soon)	Gravar narração precisa de captura de áudio (em breve)
+Recovered Presentations	Apresentações recuperadas
+Recovered {} from the last session	{} recuperadas da última sessão
+Rectangle	Retângulo
+Rectangle: Diagonal Corners Rounded	Retângulo: cantos diagonais arredondados
+Rectangle: Diagonal Corners Snipped	Retângulo: cantos diagonais cortados
+Rectangle: Rounded Corners	Retângulo: cantos arredondados
+Rectangle: Single Corner Rounded	Retângulo: um canto arredondado
+Rectangle: Single Corner Snipped	Retângulo: um canto cortado
+Rectangle: Top Corners One Rounded and One Snipped	Retângulo: cantos superiores, um arredondado e um cortado
+Rectangle: Top Corners Rounded	Retângulo: cantos superiores arredondados
+Rectangle: Top Corners Snipped	Retângulo: cantos superiores cortados
+Rectangles	Retângulos
+Rectangular	Retangular
+Red	Vermelho
+Red Pen	Caneta vermelha
+Redo	Refazer
+Redo (⌘Y)	Refazer (⌘Y)
+Reflected Rounded Rectangle	Retângulo arredondado refletido
+Reflection	Reflexo
+Regroup	Reagrupar
+Regular Pentagon	Pentágono regular
+Rehearse Timings	Ensaiar intervalos
+Rehearse\nTimings	Ensaiar\nIntervalos
+Remove	Remover
+Remove All Animations	Remover todas as animações
+Remove All Sections	Remover todas as seções
+Remove Animation	Remover animação
+Remove Background	Remover plano de fundo
+Remove Background (coming soon)	Remover plano de fundo (em breve)
+Remove Section	Remover seção
+Remove Section & Slides	Remover seção e slides
+Remove stop	Remover parada
+Remove\nBackground	Remover\nPlano de Fundo
+Rename	Renomear
+Rename Layout	Renomear layout
+Rename Section	Renomear seção
+Rename Section…	Renomear seção…
+Rename Slide	Renomear slide
+Rename…	Renomear…
+Render Slide	Renderizar slide
+Reopen	Reabrir
+Reorder Animation	Reordenar animação
+Reorder Objects	Reordenar objetos
+Replace straight quotes with smart quotes	Substituir aspas retas por aspas tipográficas
+Reply	Responder
+Reply…	Responder…
+Reset	Redefinir
+Reset Background	Redefinir plano de fundo
+Reset Crop	Redefinir recorte
+Reset Effects	Redefinir efeitos
+Reset Picture	Redefinir imagem
+Reset Slide	Redefinir slide
+Reset Slide Background	Redefinir plano de fundo do slide
+Resize shape to fit text	Redimensionar forma para ajustar ao texto
+Resolve	Resolver
+Resolve Thread	Resolver conversa
+Return	Return
+Reveal	Revelar
+Reverse the order	Inverter a ordem
+Revert	Reverter
+Review	Revisão
+Rewind after Playing	Rebobinar após reproduzir
+Ribbon Tab	Guia da faixa de opções
+Ribbon: Tilted Down	Faixa: inclinada para baixo
+Ribbon: Tilted Up	Faixa: inclinada para cima
+Right	Direita
+Right Brace	Chave direita
+Right Bracket	Colchete direito
+Right Triangle	Triângulo retângulo
+Right-to-Left Text Direction	Direção do texto da direita para a esquerda
+Ring	Anel
+Ripple	Ondulação
+Rise Up	Subir
+Rotate	Girar
+Rotate Left 90°	Girar 90° à esquerda
+Rotate Right 90°	Girar 90° à direita
+Rotate all text 270°	Girar todo o texto 270°
+Rotate all text 90°	Girar todo o texto 90°
+Rotate with shape	Girar com a forma
+Rotation	Rotação
+Round Dot	Ponto redondo
+Rounded Diagonal Corner	Canto diagonal arredondado
+Ruler	Régua
+Saturation	Saturação
+Saturation {}%	Saturação {}%
+Save	Salvar
+Save (⌘S)	Salvar (⌘S)
+Save As…	Salvar como…
+Save AutoRecover Information	Salvar informações de AutoRecuperação
+Save as Template…	Salvar como modelo…
+Save to Data	Salvar em dados
+Saved	Salvo
+Saved {path}	Salvo {path}
+Scatter	Dispersão
+ScreenTip:	Dica de tela:
+Screenshot	Captura de tela
+Screenshot (not available yet)	Captura de tela (ainda não disponível)
+Scroll: Horizontal	Rolar: horizontal
+Scroll: Vertical	Rolar: vertical
+Search commands (⇧⌘P)	Pesquisar comandos (⇧⌘P)
+Search commands…	Pesquisar comandos…
+Section	Seção
+Seek	Buscar
+Select	Selecionar
+Select All	Selecionar tudo
+Select All Text	Selecionar todo o texto
+Select Cells	Selecionar células
+Select Objects	Selecionar objetos
+Select Paragraph	Selecionar parágrafo
+Select Slides	Selecionar slides
+Select Text	Selecionar texto
+Select Word	Selecionar palavra
+Select a chart first.	Selecione um gráfico primeiro.
+Select a shape to format it.	Selecione uma forma para formatá-la.
+Select an object on the slide and add an animation from the Animations tab.	Selecione um objeto no slide e adicione uma animação na guia Animações.
+Selection	Seleção
+Selection Pane	Painel de seleção
+Selection Pane…	Painel de seleção…
+Selection\nPane	Painel de\nSeleção
+Send Backward	Enviar para trás
+Send to Back	Enviar para o fundo
+Send\nBackward	Enviar para\nTrás
+Sentence case.	Maiúscula na primeira letra.
+Set Text	Definir texto
+Set Up Show…	Configurar apresentação…
+Set Up Slide Show	Configurar apresentação de slides
+Set Up Slide Show…	Configurar apresentação de slides…
+Set Up\nSlide Show	Configurar\nApresentação
+Set as Default Shape	Definir como forma padrão
+Shading	Sombreamento
+Shadow	Sombra
+Shape	Forma
+Shape Effects	Efeitos de forma
+Shape Fill	Preenchimento da forma
+Shape Format	Formato da forma
+Shape Gallery	Galeria de formas
+Shape Outline	Contorno da forma
+Shape Styles	Estilos de forma
+Shape {}	Forma {}
+Shape\nStyles	Estilos de\nForma
+Shapes	Formas
+Shift+	Shift+
+Shift+F9	Shift+F9
+Show	Mostrar
+Show All	Mostrar tudo
+Show Comments	Mostrar comentários
+Show Media Controls	Mostrar controles de mídia
+Show Slide	Mostrar slide
+Show smart guides	Mostrar guias inteligentes
+Show type	Tipo de exibição
+Show without animation	Exibir sem animação
+Show without narration	Exibir sem narração
+Show/Hide	Mostrar/ocultar
+Show\nComments	Mostrar\nComentários
+Shred	Triturar
+Shrink & Turn	Reduzir e girar
+Shrink text on overflow	Reduzir texto em caso de excesso
+Simple Frame, White	Moldura simples, branca
+Size	Tamanho
+Size & Properties	Tamanho e propriedades
+Slide Master	Slide Mestre
+Slide Number	Número do slide
+Slide Show	Apresentação de slides
+Slide Size	Tamanho do slide
+Slide Sorter	Classificador de slides
+Slide number	Número do slide
+Slide timings recorded.	Intervalos dos slides registrados.
+Slide {:02}:{:04.1}   Total {:02}:{:02}	Slide {:02}:{:04.1}   Total {:02}:{:02}
+Slide {} of {}	Slide {} de {}
+Slide {}: {}{}	Slide {}: {}{}
+Slide {}: “{w}”	Slide {}: “{w}”
+Slide\nMaster	Slide\nMestre
+Slide\nNumber	Número do\nSlide
+Slide\nSize	Tamanho do\nSlide
+Slide\nSorter	Classificador\nde Slides
+Slides (e.g. 1,3,5):	Slides (ex.: 1,3,5):
+Slides from Outline	Slides da estrutura de tópicos
+Slides from Outline…	Slides da estrutura de tópicos…
+Slides sized for:	Slides dimensionados para:
+SmartArt	SmartArt
+Smile	Sorriso
+Smiley Face	Carinha sorridente
+Smoothly	Suavemente
+Smoothly Left	Suavemente à esquerda
+Smoothly Right	Suavemente à direita
+Snap objects to grid	Alinhar objetos à grade
+Soft Edge Rectangle	Retângulo com bordas suaves
+Soft Edges	Bordas suaves
+Solid	Sólido
+Solid fill	Preenchimento sólido
+Solid line	Linha sólida
+Sort	Classificar
+Source on GitHub	Código-fonte no GitHub
+Space	Espaço
+Spacing after (pt):	Espaçamento depois (pt):
+Spacing before (pt):	Espaçamento antes (pt):
+Special — hanging (in):	Especial — deslocado (pol):
+Speech	Fala
+Speech Bubble: Oval	Balão de fala: oval
+Speech Bubble: Rectangle	Balão de fala: retângulo
+Speech Bubble: Rectangle with Corners Rounded	Balão de fala: retângulo com cantos arredondados
+Spelling	Ortografia
+Spin	Girar
+Spinner	Catraca
+Split	Dividir
+Split Cells	Dividir células
+Split\nCells	Dividir\nCélulas
+Square	Quadrado
+Square (1:1)	Quadrado (1:1)
+Square Dot	Ponto quadrado
+Stacked	Empilhado
+Stacked Area	Área empilhada
+Stacked Bar	Barra empilhada
+Stacked Column	Coluna empilhada
+Stacked Line	Linha empilhada
+Standard (4:3)	Padrão (4:3)
+Standard Colors	Cores padrão
+Star	Estrela
+Star: 10 Points	Estrela: 10 pontas
+Star: 12 Points	Estrela: 12 pontas
+Star: 16 Points	Estrela: 16 pontas
+Star: 24 Points	Estrela: 24 pontas
+Star: 32 Points	Estrela: 32 pontas
+Star: 4 Points	Estrela: 4 pontas
+Star: 5 Points	Estrela: 5 pontas
+Star: 6 Points	Estrela: 6 pontas
+Star: 7 Points	Estrela: 7 pontas
+Star: 8 Points	Estrela: 8 pontas
+Stars and Banners	Estrelas e faixas
+Start After Previous	Iniciar após o anterior
+Start Automatically	Iniciar automaticamente
+Start On Click	Iniciar ao clicar
+Start With Previous	Iniciar com o anterior
+Start a conversation	Iniciar uma conversa
+Start time (s):	Hora de início (s):
+Start:	Início:
+Stealth end	Ponta furtiva
+Stock	Imagem de banco
+Stop	Parar
+Stop Editing Text	Parar de editar texto
+Strikethrough	Tachado
+Strips	Tiras
+Style {i}	Estilo {i}
+Subscript	Subscrito
+Subtle	Sutil
+Sun	Sol
+Sunburst	Explosão solar
+Superscript	Sobrescrito
+Surface	Superfície
+Switch	Alternar
+Swivel	Girar em torno do eixo
+Symbol	Símbolo
+System language	Idioma do sistema
+Tab	Tab
+Table	Tabela
+Table Design	Design da tabela
+Table Style Options	Opções de estilo da tabela
+Table Styles	Estilos de tabela
+Table…	Tabela…
+Task Pane	Painel de tarefas
+Teardrop	Gota
+Teeter	Balançar
+Text	Texto
+Text Box	Caixa de texto
+Text Box Margins	Margens da caixa de texto
+Text Direction	Direção do texto
+Text Effects	Efeitos de texto
+Text Fill	Preenchimento do texto
+Text Highlight Color	Cor de realce do texto
+Text Options	Opções de texto
+Text Outline	Contorno do texto
+Text Shadow	Sombra do texto
+Text/Background - Dark 1	Texto/Plano de fundo - Escuro 1
+Text/Background - Dark 2	Texto/Plano de fundo - Escuro 2
+Text/Background - Light 1	Texto/Plano de fundo - Claro 1
+Text/Background - Light 2	Texto/Plano de fundo - Claro 2
+Text\nBox	Caixa de\nTexto
+The spelling check is complete. No issues found.	A verificação ortográfica foi concluída. Nenhum problema encontrado.
+Theme Colors	Cores do tema
+Theme Gallery	Galeria de temas
+Themes	Temas
+Thesaurus	Dicionário de sinônimos
+Thesaurus (coming soon)	Dicionário de sinônimos (em breve)
+This Document	Este documento
+Thought	Pensamento
+Thought Bubble: Cloud	Balão de pensamento: nuvem
+Through Black	Através do preto
+Tight	Estreito
+Timing	Intervalo
+Top	Em cima
+Total Row	Linha de total
+Transition	Transição
+Transition Gallery	Galeria de transições
+Transitions	Transições
+Translate	Traduzir
+Translation needs a language model (not bundled)	A tradução precisa de um modelo de idioma (não incluído)
+Transparency	Transparência
+Trapezoid	Trapézio
+Treemap	Mapa de árvore
+Triangle	Triângulo
+Trigger	Gatilho
+Trim	Aparar
+Trim Media	Aparar mídia
+Turns	Voltas
+Type	Tipo
+Type Text	Digitar texto
+Type an equation in linear form (e.g. a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a).	Digite uma equação na forma linear (ex.: a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a).
+Uncover	Revelar
+Underline	Sublinhado
+Undo	Desfazer
+Undo (⌘Z)	Desfazer (⌘Z)
+Ungroup	Desagrupar
+Up	Para cima
+Use Timings	Usar intervalos
+Use timings, if present	Usar intervalos, se houver
+Username	Nome de usuário
+Version	Versão
+Version {}	Versão {}
+Vert In	Vert. para dentro
+Vert Out	Vert. para fora
+Vertical	Vertical
+Vertical alignment	Alinhamento vertical
+Very Loose	Muito amplo
+Very Tight	Muito estreito
+Video	Vídeo
+Video from File…	Vídeo do arquivo…
+View	Exibir
+Volume	Volume
+Vortex	Vórtice
+Waterfall	Cascata
+Wave	Onda
+Web Page or File	Página da Web ou arquivo
+Wedge	Cunha
+Weight	Espessura
+Wheel	Roda
+Widescreen (13.333x7.5 in)	Widescreen (13,333x7,5 pol)
+Widescreen (16:9)	Widescreen (16:9)
+Width	Largura
+Width (in):	Largura (pol):
+Width:	Largura:
+Width: 	Largura: 
+Wind	Vento
+Window	Janela
+Wipe	Limpar
+With Previous	Com o anterior
+WordArt	WordArt
+WordArt style {}	Estilo de WordArt {}
+Words	Palavras
+Wrap Text in Shape	Dispor texto na forma
+Wrap text in shape	Dispor texto na forma
+Yellow	Amarelo
+Your changes will be lost if you don't save them.	Suas alterações serão perdidas se você não salvá-las.
+Your name (comments):	Seu nome (comentários):
+Zoom	Zoom
+Zoom In	Ampliar
+Zoom Out	Reduzir
+Zoom…	Zoom…
+a) b) c)	a) b) c)
+a. b. c.	a. b. c.
+dropped file	arquivo arrastado
+i. ii. iii.	i. ii. iii.
+no presentation open	nenhuma apresentação aberta
+no slides	nenhum slide
+no text insertion point	nenhum ponto de inserção de texto
+nothing selected	nada selecionado
+nothing to redo	nada para refazer
+nothing to undo	nada para desfazer
+select text or a shape	selecione texto ou uma forma
+select two or more objects	selecione dois ou mais objetos
+size (pt)	tamanho (pt)
+tOGGLE cASE	aLTERNAR mAIÚSCULAS/minúsculas
+unknown interface language	idioma da interface desconhecido
+{ch}  Bullet	{ch}  Marcador
+{f} (Body)	{f} (Corpo)
+{f} (Headings)	{f} (Títulos)
+{name}: DeckCraft can't open this kind of file	{name}: o DeckCraft não pode abrir este tipo de arquivo
+{n} Column{}	{n} Coluna{}
+{r} pt	{r} pt
+{r} pt glow	{r} pt glow
+{w} pt	{w} pt
+{} ({} slides)	{} ({} slides)
+{} Slide Master	{} Slide Mestre
+{} contributors · {} commits	{} colaboradores · {} commits
+{} presentations	{} apresentações
+{}x{} Table	{}x{} Tabela
+“{}” is not available yet.	“{}” ainda não está disponível.
+−Bin	−bin.
+▶ Play All	▶ Reproduzir tudo
+◀ Previous	◀ Anterior
+✏ on	✏ ativado
diff --git a/crates/ui-egui/src/i18n/uk.tsv b/crates/ui-egui/src/i18n/uk.tsv
new file mode 100644
index 000000000..1c20bce7b
--- /dev/null
+++ b/crates/ui-egui/src/i18n/uk.tsv
@@ -0,0 +1,1234 @@
+# Ukrainian interface catalog. English source<TAB>translation; \n denotes a line break.
+# Contributor-original translation, MIT OR Apache-2.0.
+  Fixed date (empty = update automatically):	  Фіксована дата (порожнє поле = автоматичне оновлення):
+  Footer text:	  Текст нижнього колонтитула:
+  Present  	  Показати
+ pt	 пт
+ — Edited	 — Змінено
+"Not Allowed" Symbol	Знак «Не дозволено»
+% of all commits	% усіх комітів
++ New Comment	+ Новий коментар
++ New Slide	+ Новий слайд
++ Row	+ Рядок
++ Series	+ Ряд даних
++Bin	+Бін
+100% Stacked Bar	Нормована лінійчата з накопиченням
+100% Stacked Column	Нормована стовпчаста з накопиченням
+35mm Slides	Слайди 35 мм
+@ribbon:Home	Основне
+@ribbon:Insert	Вставлення
+@{}: {} PRs, {} commits, +{} / −{} lines (Δ {}), +{} / −{} binary assets, {} – {}	@{}: запити на злиття: {}, коміти: {}, рядки: +{} / −{} (Δ {}), двійкові ресурси: +{} / −{}, {} – {}
+A3 Paper (297x420 mm)	Папір A3 (297×420 мм)
+A4 Paper (210x297 mm)	Папір A4 (210×297 мм)
+Aa	Aa
+Abc	Abc
+About	Про програму
+About DeckCraft	Про DeckCraft
+Accent 1	Акцент 1
+Accent 2	Акцент 2
+Accent 3	Акцент 3
+Accent 4	Акцент 4
+Accent 5	Акцент 5
+Accent 6	Акцент 6
+Accessibility Checker	Перевірка доступності
+Across	Поперек
+Action	Дія
+Action Button: Custom	Кнопка дії: Власна
+Action Button: Document	Кнопка дії: Документ
+Action Button: Get Information	Кнопка дії: Отримати відомості
+Action Button: Go Back	Кнопка дії: Повернутися
+Action Button: Go Back or Previous	Кнопка дії: Назад або до попереднього
+Action Button: Go Forward or Next	Кнопка дії: Уперед або до наступного
+Action Button: Go Home	Кнопка дії: На початок
+Action Button: Go to Beginning	Кнопка дії: До початку
+Action Button: Go to End	Кнопка дії: До кінця
+Action Button: Help	Кнопка дії: Довідка
+Action Button: Sound	Кнопка дії: Звук
+Action Button: Video	Кнопка дії: Відео
+Action Button: {k}	Кнопка дії: {k}
+Action Buttons	Кнопки дій
+Add Animation	Додати анімацію
+Add Section	Додати розділ
+Add\nAnimation	Додати анімацію
+Address:	Адреса:
+Adjust Shape	Змінити фігуру
+After Previous	Після попереднього
+After:	Після:
+Airplane	Літак
+Align	Вирівняти
+Align Bottom	Вирівняти за нижнім краєм
+Align Center	Вирівняти по центру
+Align Left	Вирівняти за лівим краєм
+Align Middle	Вирівняти посередині
+Align Right	Вирівняти за правим краєм
+Align Text	Вирівняти текст
+Align Top	Вирівняти за верхнім краєм
+Alt Text	Альтернативний текст
+Alt+	Alt+
+Alt+F9	Alt+F9
+Alt\nText	Альтернативний текст
+An open-source, clean-room project. Not affiliated with Microsoft.	Незалежний проєкт із відкритим кодом. Не пов’язаний із Microsoft.
+Angle	Кут
+Animation Gallery	Галерея анімації
+Animation Pane	Панель анімації
+Animation Styles	Стилі анімації
+Animation\nPane	Панель анімації
+Animations	Анімації
+Animation Painter	Копіювання анімації
+Apply Animation	Застосувати анімацію
+Play/Pause GIF	Відтворити/призупинити GIF
+Animations on Slide	Анімації на слайді
+Appear	Поява
+Apply	Застосувати
+Apply To All	Застосувати до всіх
+Apply to All	Застосувати до всіх
+Apply\nTo All	Застосувати до всіх
+Arc	Дуга
+Arcs	Дуги
+Area	З областями
+Arrange	Упорядкувати
+Arrow	Стрілка
+Arrow at end	Стрілка в кінці
+Arrow at start	Стрілка на початку
+Arrow: Bent	Стрілка: Зігнута
+Arrow: Bent-Up	Стрілка: Зігнута вгору
+Arrow: Chevron	Стрілка: Шеврон
+Arrow: Down	Стрілка: Униз
+Arrow: Left	Стрілка: Ліворуч
+Arrow: Left-Right	Стрілка: Ліворуч і праворуч
+Arrow: Left-Right-Up	Стрілка: Ліворуч, праворуч і вгору
+Arrow: Left-Up	Стрілка: Ліворуч і вгору
+Arrow: Notched Right	Стрілка: Праворуч із вирізом
+Arrow: Pentagon	Стрілка: П’ятикутник
+Arrow: Quad	Стрілка: У чотири боки
+Arrow: Right	Стрілка: Праворуч
+Arrow: Striped Right	Стрілка: Смугаста праворуч
+Arrow: U-Turn	Стрілка: Розворот
+Arrow: Up	Стрілка: Угору
+Arrow: Up-Down	Стрілка: Угору й униз
+Arrows	Стрілки
+Arrows at both ends	Стрілки на обох кінцях
+As One Object	Як один об’єкт
+Audio	Аудіо
+Audio from File…	Аудіо з файлу…
+AutoCorrect as you type	Автовиправлення під час введення
+Autofit	Автоматичний добір
+Automatic	Автоматично
+B4 (ISO) Paper (250x353 mm)	Папір B4 (ISO) (250×353 мм)
+B5 (ISO) Paper (176x250 mm)	Папір B5 (ISO) (176×250 мм)
+Background	Тло
+Background Styles	Стилі тла
+Background\nStyles	Стилі тла
+Backspace	Backspace
+Banded Columns	Смугасті стовпці
+Banded Rows	Смугасті рядки
+Banner	Стрічка
+Basic Cycle	Простий цикл
+Basic List	Простий список
+Basic Process	Простий процес
+Basic Shapes	Основні фігури
+Before text (in):	Перед текстом (дюйми):
+Bevel	Скіс
+Binary assets added	Додані двійкові ресурси
+Binary assets removed	Видалені двійкові ресурси
+Black Left	Через чорний ліворуч
+Black Pen	Чорне перо
+Black Right	Через чорний праворуч
+Blinds	Жалюзі
+Block Arc	Блокова дуга
+Block Arrows	Блокові стрілки
+Blue	Синій
+Blue Pen	Синє перо
+Bold	Напівжирний
+Bold Flash	Спалах напівжирного
+Both	Обидва
+Bottom	Низ
+Bounce	Відскок
+Box	Коробка
+Box In	Коробка всередину
+Box Out	Коробка назовні
+Box and Whisker	Ящик із вусами
+Brightness	Яскравість
+Brightness {:+}%	Яскравість {:+}%
+Bring Forward	Перемістити вперед
+Bring to Front	На передній план
+Bring\nForward	Перемістити вперед
+Browsed at a kiosk (full screen)	Перегляд у кіоску (повноекранний)
+Browsed by an individual (window)	Індивідуальний перегляд (у вікні)
+Bubble	Бульбашкова
+Bullets	Маркери
+Burst	Спалах
+By Paragraph	За абзацами
+Callout: Down Arrow	Виноска: Стрілка вниз
+Callout: Left Arrow	Виноска: Стрілка ліворуч
+Callout: Line	Виноска: Лінія
+Callout: Right Arrow	Виноска: Стрілка праворуч
+Callout: Up Arrow	Виноска: Стрілка вгору
+Callouts	Виноски
+Cameo	Камео
+Camera capture is not available yet	Захоплення з камери ще недоступне
+Cancel	Скасувати
+Capitalize Each Word	Кожне слово з великої літери
+Caps	Великі літери
+Center	По центру
+Centered	По центру
+Change Case	Змінити регістр
+Change Chart Type	Змінити тип діаграми
+Change Picture	Змінити зображення
+Change Shape	Змінити фігуру
+Change\nChart Type	Змінити тип діаграми
+Character Spacing	Міжсимвольний інтервал
+Characters	Символи
+Chart	Діаграма
+Chart Data	Дані діаграми
+Chart Design	Оформлення діаграми
+Chart Elements	Елементи діаграми
+Chart…	Діаграма…
+Check Accessibility	Перевірити доступність
+Check\nAccessibility	Перевірити доступність
+Checkerboard	Шахова дошка
+Chevron	Шеврон
+Choose a SmartArt Graphic	Виберіть графіку SmartArt
+Chord	Хорда
+Circle	Коло
+Circle In	Коло всередину
+Circle Out	Коло назовні
+Clear All Formatting	Очистити все форматування
+Click a symbol to insert it at the insertion point.	Натисніть символ, щоб вставити його в позиції курсора.
+Click icon to add SmartArt graphic	Натисніть піктограму, щоб додати графіку SmartArt
+Click icon to add chart	Натисніть піктограму, щоб додати діаграму
+Click icon to add media	Натисніть піктограму, щоб додати медіа
+Click icon to add picture	Натисніть піктограму, щоб додати зображення
+Click icon to add table	Натисніть піктограму, щоб додати таблицю
+Click to add first slide	Натисніть, щоб додати перший слайд
+Click to add notes	Натисніть, щоб додати примітки
+Click to add subtitle	Натисніть, щоб додати підзаголовок
+Click to add text	Натисніть, щоб додати текст
+Click to add title	Натисніть, щоб додати заголовок
+Click to edit Master text styles	Натисніть, щоб змінити стилі тексту зразка
+Click to edit Master title style	Натисніть, щоб змінити стиль заголовка зразка
+Clock	Годинник
+Clockwise	За годинниковою стрілкою
+Close	Закрити
+Close Master View	Закрити режим зразка
+Close\nMaster View	Закрити режим зразка
+Cloud	Хмара
+Clustered Bar	Групована лінійчата
+Clustered Column	Групована стовпчаста
+Cmd+	Cmd+
+Cmd+,	Cmd+,
+Cmd+-	Cmd+-
+Cmd+=	Cmd+=
+Cmd+F1	Cmd+F1
+Cmd+Shift+P	Cmd+Shift+P
+Collapse the Ribbon	Згорнути стрічку
+Color	Колір
+Color Pulse	Пульсація кольору
+Colors	Кольори
+Columns	Стовпці
+Comb	Гребінка
+Combo	Комбінована
+Command Palette	Палітра команд
+Comment	Коментар
+Comments	Коментарі
+Commits	Коміти
+Community Links	Посилання спільноти
+Company	Компанія
+Complementary Color	Доповняльний колір
+Connect Shapes	З’єднати фігури
+Connection Sites	Точки з’єднання
+Connector: Curved	З’єднувач: кривий
+Connector: Elbow	З’єднувач: кутовий
+Connector: Elbow (one bend)	З’єднувач: кутовий (один згин)
+Content	Вміст
+Contrast	Контрастність
+Contrast {:+}%	Контраст {:+}%
+Contributors	Учасники
+Conveyor	Конвеєр
+Copy	Копіювати
+Corrections	Корекція
+Couldn't save AutoRecover information: {e}	Не вдалося зберегти дані автоматичного відновлення: {e}
+Counter Clockwise	Проти годинникової стрілки
+Cover	Накриття
+Create	Створити
+Crop	Обітнути
+Crop 10% each side	Обітнути на 10% з кожного боку
+Crop 20% each side	Обітнути на 20% з кожного боку
+Crop to Shape	Обітнути за фігурою
+Cross	Хрест
+Crush	Зминання
+Ctrl+	Ctrl+
+Cube	Куб
+Currency	Валюта
+Curtains	Штори
+Custom	Довільний
+Custom Path	Власний шлях
+Custom Show	Власний показ
+Custom Show 1	Власний показ 1
+Custom Shows	Власні покази
+Custom Slide Show	Власний показ слайдів
+Custom\nShow	Власний показ
+Cut	Вирізати
+Cylinder	Циліндр
+Dark Blue	Темно-синій
+Dark Mode	Темний режим
+Dark Red	Темно-червоний
+Dark appearance	Темне оформлення
+Dark\nMode	Темний режим
+Darken	Затемнення
+Dash	Штрих
+Dash Dot	Штрих і крапка
+Dashes	Штрихи
+Database	База даних
+Date	Дата
+Date & Time	Дата й час
+Date &\nTime	Дата й час
+Date and Time	Дата й час
+Date and time	Дата й час
+Decagon	Десятикутник
+Decision	Рішення
+DeckCraft	DeckCraft
+Decrease Font Size	Зменшити розмір шрифту
+Decrease List Level	Знизити рівень списку
+Delay:	Затримка:
+Delete	Видалити
+Delete Columns	Видалити стовпці
+Delete Comment	Видалити коментар
+Delete Layout	Видалити макет
+Delete Rows	Видалити рядки
+Delete Slide	Видалити слайд
+Delete Table	Видалити таблицю
+Delete Text	Видалити текст
+Desaturate	Знебарвити
+Deselect	Скасувати вибір
+Design	Оформлення
+Design Ideas	Ідеї оформлення
+Design\nIdeas	Ідеї оформлення
+Deutsch	Deutsch
+Diagonal Stripe	Діагональна смуга
+Diamond	Ромб
+Diamond In	Ромб усередину
+Diamond Out	Ромб назовні
+Direction	Напрямок
+Disappear	Зникнення
+Discard Recovered Presentations	Відкинути відновлені презентації
+Display name	Відображуване ім'я
+Dissolve	Розчинення
+Dissolve In	Поступова поява
+Dissolve Out	Поступове зникнення
+Distribute	Розподілити
+Distribute Columns	Розподілити стовпці
+Distribute Horizontally	Розподілити горизонтально
+Distribute Rows	Розподілити рядки
+Distribute Vertically	Розподілити вертикально
+Division Sign	Знак ділення
+Do not Autofit	Без автоматичного добору
+Do you want to save the changes you made to {what}?	Зберегти зміни, внесені до {what}?
+Document	Документ
+Dodecagon	Дванадцятикутник
+Don't Save	Не зберігати
+Don't show on title slide	Не показувати на титульному слайді
+Done	Готово
+Donut	Кільце
+Doors	Двері
+Double Brace	Подвійна фігурна дужка
+Double Bracket	Подвійна квадратна дужка
+Double Wave	Подвійна хвиля
+Doughnut	Кільцева
+Down	Униз
+Drape	Завіса
+Draw	Малювання
+Drop Shadow Rectangle	Прямокутник із тінню
+Duplicate	Дублювати
+Duplicate Selected Slides	Дублювати вибрані слайди
+Duplicate Slide	Дублювати слайд
+Duration:	Тривалість:
+Dynamic Content	Динамічний вміст
+Edit	Редагування
+Edit Alt Text…	Змінити альтернативний текст…
+Edit Data	Змінити дані
+Edit Shape	Змінити фігуру
+Edit Text	Редагувати текст
+Edit the data: first row = series names, first column = categories.	Змініть дані: перший рядок — назви рядів, перший стовпець — категорії.
+Edit\nData	Змінити дані
+Edit\nShape	Змінити фігуру
+Editing	Редагування
+Effect Options	Параметри ефекту
+Effect\nOptions	Параметри ефекту
+Effects	Ефекти
+Email Address	Адреса електронної пошти
+Email address:	Адреса електронної пошти:
+Emphasis	Виділення
+End	Кінець
+End Show	Завершити показ
+End of slide show	Кінець показу слайдів
+End of slide show, click to exit.	Кінець показу слайдів. Натисніть, щоб вийти.
+End trim (s):	Обрізання в кінці (с):
+English (United Kingdom)	Англійська (Велика Британія)
+English (United States)	Англійська (США)
+Enter	Enter
+Entrance	Поява
+Equals	Дорівнює
+Equation	Рівняння
+Equation Shapes	Фігури рівнянь
+Eraser	Гумка
+Escape	Escape
+Español	Español
+Exciting	Виразні
+Exit	Зникнення
+Expand	Розгорнути
+Explosion: 14 Points	Спалах: 14 променів
+Explosion: 8 Points	Спалах: 8 променів
+Export	Експорт
+Export the presentation as:	Експортувати презентацію як:
+Exported {path}	Експортовано: {path}
+Export…	Експортувати…
+Fade	Послабити
+Fade in (s):	Поступова поява (с):
+Fade out (s):	Поступове зникнення (с):
+Fall Over	Падіння
+Ferris Wheel	Оглядове колесо
+File	Файл
+Fill	Заливка
+Fill & Line	Заливка й лінія
+Fill Color	Колір заливки
+Filled Radar	Заповнена пелюсткова
+Find…	Знайти…
+First	Перший
+First Column	Перший стовпець
+First Slide	Перший слайд
+First commit	Перший коміт
+Fit	Умістити
+Fit slide to current window	Підігнати слайд до поточного вікна
+Fit to Window	Умістити у вікні
+Fit to\nWindow	Умістити у вікні
+Flash	Спалах
+Flip	Віддзеркалити
+Flip Horizontal	Віддзеркалити горизонтально
+Flip Vertical	Віддзеркалити вертикально
+Float In	Плавна поява
+Float Out	Плавне зникнення
+Flowchart	Блок-схема
+Flowchart: Alternate Process	Блок-схема: Альтернативний процес
+Flowchart: Card	Блок-схема: Картка
+Flowchart: Collate	Блок-схема: Зіставлення
+Flowchart: Connector	Блок-схема: З’єднувач
+Flowchart: Data	Блок-схема: Дані
+Flowchart: Decision	Блок-схема: Рішення
+Flowchart: Delay	Блок-схема: Затримка
+Flowchart: Direct Access Storage	Блок-схема: Сховище прямого доступу
+Flowchart: Display	Блок-схема: Екран
+Flowchart: Document	Блок-схема: Документ
+Flowchart: Extract	Блок-схема: Видобування
+Flowchart: Internal Storage	Блок-схема: Внутрішнє сховище
+Flowchart: Magnetic Disk	Блок-схема: Магнітний диск
+Flowchart: Manual Input	Блок-схема: Ручне введення
+Flowchart: Manual Operation	Блок-схема: Ручна операція
+Flowchart: Merge	Блок-схема: Об’єднання
+Flowchart: Multidocument	Блок-схема: Кілька документів
+Flowchart: Off-page Connector	Блок-схема: З’єднувач між сторінками
+Flowchart: Or	Блок-схема: Або
+Flowchart: Predefined Process	Блок-схема: Визначений процес
+Flowchart: Preparation	Блок-схема: Підготовка
+Flowchart: Process	Блок-схема: Процес
+Flowchart: Punched Tape	Блок-схема: Перфострічка
+Flowchart: Sequential Access Storage	Блок-схема: Сховище послідовного доступу
+Flowchart: Sort	Блок-схема: Сортування
+Flowchart: Stored Data	Блок-схема: Збережені дані
+Flowchart: Summing Junction	Блок-схема: Вузол підсумовування
+Flowchart: Terminator	Блок-схема: Початок/кінець
+Fly In	Влітати
+Fly Out	Вилітання
+Fly Through	Пролітання
+Folded Corner	Загнутий кут
+Follow the layout	Відповідно до макета
+Followed Hyperlink	Відвідане гіперпосилання
+Font	Шрифт
+Font Color	Колір шрифту
+Font Size	Розмір шрифту
+Fonts	Шрифти
+Footer	Нижній колонтитул
+Foreground	Передній план
+Format	Формат
+Format Background	Формат тла
+Format Background…	Формат тла…
+Format Painter	Копіювання формату
+Format Painter (double-click to keep it on)	Копіювання формату (подвійне натискання для постійного застосування)
+Format Pane	Панель форматування
+Format Shape	Формат фігури
+Format Shape…	Формат фігури…
+Format\nBackground	Формат тла
+Format\nPane	Панель форматування
+Formatting State	Стан форматування
+Fracture	Розлом
+Frame	Рамка
+Français	Français
+Freeform	Довільна фігура
+From 	Від
+From Beginning	Від початку
+From Bottom	Знизу
+From Bottom Left	Знизу ліворуч
+From Bottom Right	Знизу праворуч
+From Current Slide	Від поточного слайда
+From Left	Зліва
+From Right	Справа
+From Top	Згори
+From Top Left	Згори ліворуч
+From Top Right	Згори праворуч
+From bottom left	Знизу ліворуч
+From bottom right	Знизу праворуч
+From center	Від центра
+From top left	Згори ліворуч
+From top right	Згори праворуч
+From\nBeginning	Від початку
+From\nCurrent Slide	Від поточного слайда
+Full	Повна
+Full Page Slides	Слайди на всю сторінку
+Funnel	Лійкова
+Gallery	Галерея
+General	Загальні
+Get Text	Отримати текст
+Glitter	Блиск
+Glow	Світіння
+Go to	Перейти
+Go to Slide	Перейти до слайда
+Grab bag	Випадкова добірка
+Gradient fill	Градієнтна заливка
+Gradient stops	Опорні точки градієнта
+Gradient…	Градієнт…
+Grayscale	Градації сірого
+Greek	Грецька
+Green	Зелений
+Gridlines	Лінії сітки
+Group	Згрупувати
+Group Objects	Згрупувати об’єкти
+Grow & Turn	Збільшення й обертання
+Grow/Shrink	Збільшення/зменшення
+Guides	Напрямні
+Half	Половина
+Half Frame	Половина рамки
+Handout Master	Зразок видачі
+Handout Master (coming soon)	Зразок видачі (незабаром)
+Handout\nMaster	Зразок видачі
+Handouts (1 slide per page)	Видача (1 слайд на сторінку)
+Handouts (2 slides per page)	Видача (2 слайди на сторінку)
+Handouts (3 slides per page)	Видача (3 слайди на сторінку)
+Handouts (4 slides per page)	Видача (4 слайди на сторінку)
+Handouts (6 slides per page)	Видача (6 слайдів на сторінку)
+Handouts (9 slides per page)	Видача (9 слайдів на сторінку)
+Header	Верхній колонтитул
+Header & Footer	Колонтитули
+Header &\nFooter	Колонтитули
+Header Row	Рядок заголовка
+Header and Footer	Колонтитули
+Header and Footer…	Колонтитули…
+Heart	Серце
+Height	Висота
+Height (in):	Висота (дюйми):
+Height:	Висота:
+Help	Довідка
+Heptagon	Семикутник
+Hexagon	Шестикутник
+Hide All	Приховати все
+Hide Background Graphics	Приховати графіку тла
+Hide During Show	Приховати під час показу
+Hide Slide	Приховати слайд
+Hide background graphics	Приховати графіку тла
+Hide\nSlide	Приховати слайд
+Hierarchy	Ієрархія
+High	Висока
+Highlighter	Маркер виділення
+Histogram	Гістограма
+Home	Початковий екран
+Honeycomb	Стільники
+Horizontal	Горизонтально
+Horz In	Горизонтально всередину
+Horz Out	Горизонтально назовні
+How would you describe this object and its context to someone who is blind or has low vision?	Як би ви описали цей об’єкт та його контекст людині з порушенням зору?
+Hyperlink	Гіперпосилання
+Icons	Піктограми
+In	Усередину
+In Bounce	Усередину з відскоком
+Include hidden slides	Включити приховані слайди
+Increase Font Size	Збільшити розмір шрифту
+Increase List Level	Підвищити рівень списку
+Ink to Math	Рукописне введення в рівняння
+Ink to Math (coming soon)	Рукописне введення в рівняння (незабаром)
+Ink to Shape	Рукописне введення у фігуру
+Ink to Shape (coming soon)	Рукописне введення у фігуру (незабаром)
+Ink to Text	Рукописне введення в текст
+Ink to Text (coming soon)	Рукописне введення в текст (незабаром)
+Ink to\nMath	Рукописне введення в рівняння
+Ink to\nShape	Рукописне введення у фігуру
+Ink to\nText	Рукописне введення в текст
+Inner	Внутрішня
+Insert	Вставити
+Insert Above	Вставити вище
+Insert Below	Вставити нижче
+Insert Hyperlink	Вставити гіперпосилання
+Insert Layout	Вставити макет
+Insert Left	Вставити ліворуч
+Insert Placeholder	Вставити заповнювач
+Insert Right	Вставити праворуч
+Insert Table	Вставити таблицю
+Insert Table…	Вставити таблицю…
+Insert picture from file…	Вставити зображення з файлу…
+Insert\nAbove	Вставити вище
+Insert\nBelow	Вставити нижче
+Insert\nLayout	Вставити макет
+Insert\nLeft	Вставити ліворуч
+Insert\nPlaceholder	Вставити заповнювач
+Insert\nRight	Вставити праворуч
+Inspect Presentation	Переглянути дані презентації
+Inspect Shape	Переглянути дані фігури
+Inspect Slide	Переглянути дані слайда
+Interface Language	Мова інтерфейсу
+Interface language:	Мова інтерфейсу:
+Interface size	Розмір інтерфейсу
+Isosceles Triangle	Рівнобедрений трикутник
+Italiano	Italiano
+Italic	Курсивний
+JPEG image (current slide)	Зображення JPEG (поточний слайд)
+Join our community on Discord	Приєднуйтеся до нашої спільноти в Discord
+Join the ArtCraft community on Discord	Приєднуйтеся до спільноти ArtCraft у Discord
+Justify	По ширині
+L-Shape	Г-подібна фігура
+Language	Мова
+Last	Останній
+Last Column	Останній стовпець
+Last Slide	Останній слайд
+Last commit	Останній коміт
+Layout	Макет
+Learn More	Докладніше
+Learn\nMore	Докладніше
+Ledger Paper (11x17 in)	Папір Ledger (11×17 дюймів)
+Left	Ліворуч
+Left Brace	Ліва фігурна дужка
+Left Bracket	Ліва квадратна дужка
+Letter Paper (8.5x11 in)	Папір Letter (8,5×11 дюймів)
+Liberation Serif	Liberation Serif
+Light Blue	Світло-синій
+Light Green	Світло-зелений
+Light/Dark appearance	Світле/темне оформлення
+Lighten	Освітлення
+Lightning	Блискавка
+Lightning Bolt	Блискавка
+Line	Лінія
+Line Color	Колір лінії
+Line Spacing	Міжрядковий інтервал
+Line Spacing Options…	Параметри міжрядкового інтервалу…
+Line delta	Різниця рядків
+Line spacing (lines):	Міжрядковий інтервал (рядки):
+Line with Markers	Лінійна з маркерами
+Linear	Лінійний
+Lines	Лінії
+Lines +/−	Рядки +/−
+Lines added	Додані рядки
+Lines deleted	Видалені рядки
+Link	Посилання
+Link…	Посилання…
+List Commands	Список команд
+Lock	Заблокувати
+Long Dash	Довгий штрих
+Long Dash Dot	Довгий штрих і крапка
+Loop continuously until 'Esc'	Повторювати безперервно до натискання «Esc»
+Loop until Stopped	Повторювати до зупинки
+Loops	Петлі
+Loose	Розріджений
+Low	Низька
+MIT OR Apache-2.0 · © 2026 ArtCraft Team and the DeckCraft contributors	MIT OR Apache-2.0 · © 2026 Команда ArtCraft та учасники DeckCraft
+Margins (pt)	Поля (пт)
+Mark as decorative	Позначити як декоративний
+Mark selected text as:	Позначити вибраний текст як:
+Math	Математика
+Matrix	Матриця
+Maximize content (else ensure fit)	Збільшити вміст (інакше вмістити)
+Media	Медіа
+Media Info	Відомості про медіа
+Medium	Середній
+Merge Cells	Об’єднати клітинки
+Merge Shapes	Об’єднати фігури
+Merge\nCells	Об’єднати клітинки
+Merge\nShapes	Об’єднати фігури
+Merged PRs	Об’єднані запити на злиття
+Middle	Посередині
+Minus Sign	Знак мінуса
+Model	Модель
+Models	Моделі
+Moon	Місяць
+More Colors… #	Інші кольори… #
+Morph	Трансформація
+Motion	Рух
+Motion Paths	Шляхи переміщення
+Move	Переміщення
+Move Down	Перемістити вниз
+Move Insertion Point	Перемістити курсор введення
+Move Section	Перемістити розділ
+Move Section Down	Перемістити розділ униз
+Move Section Up	Перемістити розділ угору
+Move Slide	Перемістити слайд
+Move Up	Перемістити вгору
+Multiplication Sign	Знак множення
+Multiply	Множення
+Mute	Вимкнути звук
+Name	Ім’я
+Name (A–Z)	Ім'я (А–Я)
+Name:	Назва:
+New Comment	Новий коментар
+New Presentation	Нова презентація
+New Slide	Новий слайд
+New Slide (⇧⌘N)	Новий слайд (⇧⌘N)
+New presentation	Нова презентація
+New show name:	Назва нового показу:
+New\nComment	Новий коментар
+New\nSlide	Новий слайд
+Next	Далі
+Next Slide	Наступний слайд
+Next Window	Наступне вікно
+Next ▶	Далі ▶
+No Color	Без кольору
+No Fill	Без заливки
+No Glow	Без світіння
+No Outline	Без обведення
+No Reflection	Без відбиття
+No Shadow	Без тіні
+No Soft Edges	Без розмиття країв
+No accessibility issues found. People with disabilities should not have difficulty reading this document.	Проблем доступності не виявлено. Люди з інвалідністю не повинні мати труднощів із читанням цього документа.
+No comments on this slide.	На цьому слайді немає коментарів.
+No contributor data was built into this copy.	У цю копію не вбудовано дані про учасників.
+No fill	Без заливки
+No line	Без лінії
+No model credits were built into this copy.	У цю копію не вбудовано дані про використані моделі.
+No notes.	Немає приміток.
+No sound: {err}	Немає звуку: {err}
+None	Немає
+Normal	Звичайний
+Not Equal	Не дорівнює
+Not allowed	Не дозволено
+Notes	Примітки
+Notes Master	Зразок приміток
+Notes Master (coming soon)	Зразок приміток (незабаром)
+Notes Page	Сторінка приміток
+Notes Pages	Сторінки приміток
+Notes\nMaster	Зразок приміток
+Notes\nPage	Сторінка приміток
+Nudge	Зсунути
+Number of columns:	Кількість стовпців:
+Number of rows:	Кількість рядків:
+Numbering	Нумерація
+Object Color	Колір об’єкта
+Objects	Об’єкти
+Octagon	Восьмикутник
+On Click	Після натискання
+On Click of {name}	Після натискання на {name}
+On Click of… (none)	Після натискання на… (немає)
+On Mouse Click	Після натискання мишею
+On-screen Show (16:10)	Екранний показ (16:10)
+Open Data	Відкрити дані
+Open Dialog	Відкрити діалог
+Open Recovered Presentations	Відкрити відновлені презентації
+Open the sample deck	Відкрити зразок презентації
+Open…	Відкрити…
+Orange	Помаранчевий
+Orbit	Орбіта
+Order Objects	Порядок об’єктів
+Origami	Оригамі
+Out	Назовні
+Out Bounce	Назовні з відскоком
+Outer	Зовнішня
+Outline	Структура
+Outline (.txt)	Структура (.txt)
+Outline View	Режим структури
+Outline\nView	Режим структури
+Oval	Овал
+Oval ends	Овальні кінці
+Overhead	Діапроєктор
+PDF document (.pdf)	Документ PDF (.pdf)
+PNG images (all slides)	Зображення PNG (усі слайди)
+PNG images (current slide)	Зображення PNG (поточний слайд)
+PRs	Запити на злиття
+Page Curl	Завертання сторінки
+Page Setup…	Параметри сторінки…
+PageDown	PageDown
+PageUp	PageUp
+Pan	Панорамування
+Pane	Панель
+Paragraph	Абзац
+Paragraph…	Абзац…
+Parallelogram	Паралелограм
+Pareto	Парето
+Partial Circle	Частина кола
+Particles	Частинки
+Paste	Вставити
+Paste (⌘V)	Вставити (⌘V)
+Paste Formatting	Вставити форматування
+Paste and Match Formatting	Вставити з відповідним форматуванням
+Paste or type an outline. Unindented lines become slide titles; tab-indented lines become bullets.	Вставте або введіть структуру. Рядки без відступу стають заголовками слайдів; рядки з відступом табуляції — пунктами списку.
+Pasted image.png	Вставлене зображення.png
+Path	Контур
+Pattern fill	Візерункова заливка
+Pause	Пауза
+Peek In	Визирання
+Peel Off	Відшарування
+Pencil	Олівець
+Pentagon	П’ятикутник
+Perspective	Перспектива
+Pick a graphic; type one item per line.	Виберіть графіку; введіть по одному елементу в рядку.
+Pick a look for your slides. Ideas are generated on your device.	Виберіть оформлення слайдів. Ідеї створюються на вашому пристрої.
+Picture	Зображення
+Picture Format	Формат зображення
+Picture Styles	Стилі зображення
+Picture from File…	Зображення з файлу…
+Picture or texture fill	Заливка зображенням або текстурою
+Picture\nStyles	Стилі зображення
+Pictures	Зображення
+Pie	Секторна
+Pin	Прикріпити
+Placeholder colour	Колір заповнювача
+Plan\nBuild\nLaunch	Планування\nСтворення\nЗапуск
+Plaque	Табличка
+Play	Відтворити
+Play Across Slides	Відтворювати на кількох слайдах
+Play Full Screen	Відтворювати на весь екран
+Play Narrations	Відтворювати звуковий супровід
+Play from Current Slide	Відтворити з поточного слайда
+Play from Start	Відтворити від початку
+Play from Start (F5)	Відтворити від початку (F5)
+Play from\nCurrent Slide	Відтворити з поточного слайда
+Play from\nStart	Відтворити від початку
+Play/Pause	Відтворити/призупинити
+Playback	Відтворення
+Plus	Плюс
+Plus In	Плюс усередину
+Plus Out	Плюс назовні
+Plus Sign	Знак плюса
+Portrait (9:16)	Портретний (9:16)
+Português	Português
+Position	Положення
+Position Objects	Позиція об’єктів
+Position and Size	Позиція та розмір
+Post	Надіслати
+Poster Frame	Кадр афіші
+PowerPoint Presentation (.pptx)	Презентація PowerPoint (.pptx)
+Preferences	Налаштування
+Preferences…	Налаштування…
+Presentation	Презентація
+Presentations	Презентації
+Presentations and slide shows, rebuilt from scratch in pure Rust.	Презентації та покази слайдів, створені з нуля мовою Rust.
+Presented by a speaker (full screen)	Доповідачем (повноекранний режим)
+Presenter View	Режим доповідача
+Presenter View — DeckCraft	Режим доповідача — DeckCraft
+Presenter\nView	Режим доповідача
+Preset gradients	Готові градієнти
+Prestige	Престиж
+Preview	Попередній перегляд
+Previous Slide	Попередній слайд
+Print layout:	Макет друку:
+Properties	Властивості
+Pulse	Пульсація
+Punctuation	Пунктуація
+Purple	Фіолетовий
+Push	Зсув
+Pyramid	Піраміда
+Quick Styles	Експрес-стилі
+Quick\nStyles	Експрес-стилі
+Radar	Пелюсткова
+Radial	Радіальний
+Random	Випадковий
+Random Bars	Випадкові смуги
+Reading View	Режим читання
+Reading\nView	Режим читання
+Real name	Справжнє ім'я
+Recent	Нещодавні
+Record	Запис
+Recording narration needs audio capture (coming soon)	Для запису звукового супроводу потрібне захоплення аудіо (незабаром)
+Recovered Presentations	Відновлені презентації
+Recovered {} from the last session	Відновлено {} з попереднього сеансу
+Rectangle	Прямокутник
+Rectangle: Diagonal Corners Rounded	Прямокутник: заокруглені діагональні кути
+Rectangle: Diagonal Corners Snipped	Прямокутник: зрізані діагональні кути
+Rectangle: Rounded Corners	Прямокутник: заокруглені кути
+Rectangle: Single Corner Rounded	Прямокутник: один заокруглений кут
+Rectangle: Single Corner Snipped	Прямокутник: один зрізаний кут
+Rectangle: Top Corners One Rounded and One Snipped	Прямокутник: один верхній кут заокруглений, інший зрізаний
+Rectangle: Top Corners Rounded	Прямокутник: заокруглені верхні кути
+Rectangle: Top Corners Snipped	Прямокутник: зрізані верхні кути
+Rectangles	Прямокутники
+Rectangular	Прямокутний
+Red	Червоний
+Red Pen	Червоне перо
+Redo	Повторити
+Redo (⌘Y)	Повторити (⌘Y)
+Reflected Rounded Rectangle	Заокруглений прямокутник із відбиттям
+Reflection	Відбиття
+Regroup	Перегрупувати
+Regular Pentagon	Правильний п’ятикутник
+Rehearse Timings	Репетиція часу показу
+Rehearse\nTimings	Репетиція часу показу
+Remove	Вилучити
+Remove All Animations	Видалити всі анімації
+Remove All Sections	Видалити всі розділи
+Remove Animation	Видалити анімацію
+Remove Background	Видалити тло
+Remove Background (coming soon)	Видалення тла (незабаром)
+Remove Section	Видалити розділ
+Remove Section & Slides	Видалити розділ і слайди
+Remove stop	Видалити опорну точку
+Remove\nBackground	Видалити тло
+Rename	Перейменувати
+Rename Layout	Перейменувати макет
+Rename Section	Перейменувати розділ
+Rename Section…	Перейменувати розділ…
+Rename Slide	Перейменувати слайд
+Rename…	Перейменувати…
+Render Slide	Візуалізувати слайд
+Reopen	Відкрити знову
+Reorder Animation	Змінити порядок анімації
+Reorder Objects	Змінити порядок об’єктів
+Replace straight quotes with smart quotes	Замінювати прямі лапки типографськими
+Reply	Відповісти
+Reply…	Відповісти…
+Reset	Скинути
+Reset Background	Скинути тло
+Reset Crop	Скинути обтинання
+Reset Effects	Скинути ефекти
+Reset Picture	Скинути зображення
+Reset Slide	Скинути слайд
+Reset Slide Background	Скинути тло слайда
+Resize shape to fit text	Змінити розмір фігури за текстом
+Resolve	Позначити як вирішений
+Resolve Thread	Завершити обговорення
+Return	Повернутися
+Reveal	Відкриття
+Reverse the order	Зворотний порядок
+Revert	Повернути попередню версію
+Review	Рецензування
+Rewind after Playing	Перемотати після відтворення
+Ribbon Tab	Вкладка стрічки
+Ribbon: Tilted Down	Стрічка: нахил униз
+Ribbon: Tilted Up	Стрічка: нахил угору
+Right	Праворуч
+Right Brace	Права фігурна дужка
+Right Bracket	Права квадратна дужка
+Right Triangle	Прямокутний трикутник
+Right-to-Left Text Direction	Напрямок тексту справа наліво
+Ring	Кільце
+Ripple	Брижі
+Rise Up	Підняття
+Rotate	Повернути
+Rotate Left 90°	Повернути ліворуч на 90°
+Rotate Right 90°	Повернути праворуч на 90°
+Rotate all text 270°	Повернути весь текст на 270°
+Rotate all text 90°	Повернути весь текст на 90°
+Rotate with shape	Повертати разом із фігурою
+Rotation	Обертання
+Round Dot	Кругла крапка
+Rounded Diagonal Corner	Заокруглений діагональний кут
+Ruler	Лінійка
+Saturation	Насиченість
+Saturation {}%	Насиченість {}%
+Save	Зберегти
+Save (⌘S)	Зберегти (⌘S)
+Save As…	Зберегти як…
+Save AutoRecover Information	Зберегти дані автоматичного відновлення
+Save as Template…	Зберегти як шаблон…
+Save to Data	Зберегти в дані
+Saved	Збережено
+Saved {path}	Збережено: {path}
+Scatter	Точкова
+ScreenTip:	Підказка:
+Screenshot	Знімок екрана
+Screenshot (not available yet)	Знімок екрана (ще недоступно)
+Scroll: Horizontal	Сувій: горизонтальний
+Scroll: Vertical	Сувій: вертикальний
+Search commands (⇧⌘P)	Пошук команд (⇧⌘P)
+Search commands…	Пошук команд…
+Section	Розділ
+Seek	Перейти до позиції
+Select	Виділення
+Select All	Виділити все
+Select All Text	Вибрати весь текст
+Select Cells	Вибрати клітинки
+Select Objects	Вибрати об’єкти
+Select Paragraph	Вибрати абзац
+Select Slides	Вибрати слайди
+Select Text	Вибрати текст
+Select Word	Вибрати слово
+Select a chart first.	Спочатку виберіть діаграму.
+Select a shape to format it.	Виберіть фігуру для форматування.
+Select an object on the slide and add an animation from the Animations tab.	Виберіть об’єкт на слайді та додайте анімацію на вкладці «Анімації».
+Selection	Виділення
+Selection Pane	Панель вибору
+Selection Pane…	Панель вибору…
+Selection\nPane	Панель вибору
+Send Backward	Перемістити назад
+Send to Back	На задній план
+Send\nBackward	Перемістити назад
+Sentence case.	Як у реченні.
+Set Text	Задати текст
+Set Up Show…	Налаштувати показ…
+Set Up Slide Show	Налаштувати показ слайдів
+Set Up Slide Show…	Налаштувати показ слайдів…
+Set Up\nSlide Show	Налаштувати показ слайдів
+Set as Default Shape	Установити як стандартну фігуру
+Shading	Затінення
+Shadow	Тінь
+Shape	Фігура
+Shape Effects	Ефекти фігури
+Shape Fill	Заливка фігури
+Shape Format	Формат фігури
+Shape Gallery	Галерея фігур
+Shape Outline	Обведення фігури
+Shape Styles	Стилі фігур
+Shape {}	Фігура {}
+Shape\nStyles	Стилі фігур
+Shapes	Фігури
+Shift+	Shift+
+Shift+F9	Shift+F9
+Show	Показати
+Show All	Показати всі
+Show Comments	Показати коментарі
+Show Media Controls	Показати елементи керування медіа
+Show Slide	Показати слайд
+Show smart guides	Показувати розумні напрямні
+Show type	Тип показу
+Show without animation	Показ без анімації
+Show without narration	Показ без звукового супроводу
+Show/Hide	Показати/приховати
+Show\nComments	Показати коментарі
+Shred	Подрібнення
+Shrink & Turn	Зменшення й обертання
+Shrink text on overflow	Зменшувати текст у разі переповнення
+Simple Frame, White	Проста біла рамка
+Size	Розмір
+Size & Properties	Розмір і властивості
+Slide Master	Зразок слайдів
+Slide Number	Номер слайда
+Slide Show	Показ слайдів
+Slide Size	Розмір слайда
+Slide Sorter	Сортувальник слайдів
+Slide number	Номер слайда
+Slide timings recorded.	Час показу слайдів записано.
+Slide {:02}:{:04.1}   Total {:02}:{:02}	Слайд {:02}:{:04.1}   Загалом {:02}:{:02}
+Slide {} of {}	Слайд {} з {}
+Slide {}: {}{}	Слайд {}: {}{}
+Slide {}: “{w}”	Слайд {}: «{w}»
+Slide\nMaster	Зразок слайдів
+Slide\nNumber	Номер слайда
+Slide\nSize	Розмір слайда
+Slide\nSorter	Сортувальник слайдів
+Slides (e.g. 1,3,5):	Слайди (наприклад, 1,3,5):
+Slides from Outline	Слайди зі структури
+Slides from Outline…	Слайди зі структури…
+Slides sized for:	Розмір слайдів для:
+SmartArt	SmartArt
+Smile	Усмішка
+Smiley Face	Усміхнене обличчя
+Smoothly	Плавно
+Smoothly Left	Плавно ліворуч
+Smoothly Right	Плавно праворуч
+Snap objects to grid	Прив’язувати об’єкти до сітки
+Soft Edge Rectangle	Прямокутник із розмитими краями
+Soft Edges	Розмиті краї
+Solid	Суцільний
+Solid fill	Суцільна заливка
+Solid line	Суцільна лінія
+Sort	Сортування
+Source on GitHub	Вихідний код на GitHub
+Space	Space
+Spacing after (pt):	Інтервал після (пт):
+Spacing before (pt):	Інтервал перед (пт):
+Special — hanging (in):	Спеціальний — виступ (дюйми):
+Speech	Мовлення
+Speech Bubble: Oval	Овальна мовна бульбашка
+Speech Bubble: Rectangle	Прямокутна мовна бульбашка
+Speech Bubble: Rectangle with Corners Rounded	Мовна бульбашка: прямокутник із заокругленими кутами
+Spelling	Орфографія
+Spin	Обертання
+Spinner	Кругове обертання
+Split	Розділення
+Split Cells	Розділити клітинки
+Split\nCells	Розділити клітинки
+Square	Квадрат
+Square (1:1)	Квадратний (1:1)
+Square Dot	Квадратна крапка
+Stacked	Накопичувальна
+Stacked Area	З областями з накопиченням
+Stacked Bar	Лінійчата з накопиченням
+Stacked Column	Стовпчаста з накопиченням
+Stacked Line	Лінійна з накопиченням
+Standard (4:3)	Стандартний (4:3)
+Standard Colors	Стандартні кольори
+Star	Зірка
+Star: 10 Points	Зірка: 10 променів
+Star: 12 Points	Зірка: 12 променів
+Star: 16 Points	Зірка: 16 променів
+Star: 24 Points	Зірка: 24 промені
+Star: 32 Points	Зірка: 32 промені
+Star: 4 Points	Зірка: 4 промені
+Star: 5 Points	Зірка: 5 променів
+Star: 6 Points	Зірка: 6 променів
+Star: 7 Points	Зірка: 7 променів
+Star: 8 Points	Зірка: 8 променів
+Stars and Banners	Зірки та стрічки
+Start After Previous	Почати після попереднього
+Start Automatically	Почати автоматично
+Start On Click	Почати після натискання
+Start With Previous	Почати разом із попереднім
+Start a conversation	Почніть розмову
+Start time (s):	Час початку (с):
+Start:	Початок:
+Stealth end	Вістря
+Stock	Біржова
+Stop	Зупинити
+Stop Editing Text	Завершити редагування тексту
+Strikethrough	Закреслення
+Strips	Смуги
+Style {i}	Стиль {i}
+Subscript	Підрядковий
+Subtle	Стримані
+Sun	Сонце
+Sunburst	Сонячні промені
+Superscript	Надрядковий
+Surface	Поверхнева
+Switch	Перемикання
+Swivel	Обертання
+Symbol	Символ
+System language	Мова системи
+Tab	Табуляція
+Table	Таблиця
+Table Design	Оформлення таблиці
+Table Style Options	Параметри стилю таблиці
+Table Styles	Стилі таблиці
+Table…	Таблиця…
+Task Pane	Панель завдань
+Teardrop	Крапля
+Teeter	Хитання
+Text	Текст
+Text Box	Текстове поле
+Text Box Margins	Поля текстового блока
+Text Direction	Напрямок тексту
+Text Effects	Текстові ефекти
+Text Fill	Заливка тексту
+Text Highlight Color	Колір виділення тексту
+Text Options	Параметри тексту
+Text Outline	Обведення тексту
+Text Shadow	Тінь тексту
+Text/Background - Dark 1	Текст/тло — темний 1
+Text/Background - Dark 2	Текст/тло — темний 2
+Text/Background - Light 1	Текст/тло — світлий 1
+Text/Background - Light 2	Текст/тло — світлий 2
+Text\nBox	Текстове поле
+The spelling check is complete. No issues found.	Перевірку правопису завершено. Помилок не виявлено.
+Theme Colors	Кольори теми
+Theme Gallery	Галерея тем
+Themes	Теми
+Thesaurus	Тезаурус
+Thesaurus (coming soon)	Тезаурус (незабаром)
+This Document	Цей документ
+Thought	Думка
+Thought Bubble: Cloud	Бульбашка думки: хмара
+Through Black	Через чорний
+Tight	Ущільнений
+Timing	Час показу
+Top	Верх
+Total Row	Рядок підсумку
+Transition	Перехід
+Transition Gallery	Галерея переходів
+Transitions	Переходи
+Translate	Перекласти
+Translation needs a language model (not bundled)	Для перекладу потрібна мовна модель (не входить до комплекту)
+Transparency	Прозорість
+Trapezoid	Трапеція
+Treemap	Деревоподібна
+Triangle	Трикутник
+Trigger	Умова запуску
+Trim	Обрізати
+Trim Media	Обрізати медіа
+Turns	Повороти
+Type	Тип
+Type Text	Ввести текст
+Type an equation in linear form (e.g. a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a).	Введіть рівняння в лінійному вигляді (наприклад, a^2+b^2=c^2, x=(-b±√(b^2-4ac))/2a).
+Uncover	Відкривання
+Underline	Підкреслення
+Undo	Скасувати
+Undo (⌘Z)	Скасувати (⌘Z)
+Ungroup	Розгрупувати
+Up	Угору
+Use Timings	Використовувати час показу
+Use timings, if present	Використовувати час показу, якщо задано
+Username	Ім'я користувача
+Version	Версія
+Version {}	Версія {}
+Vert In	Вертикально всередину
+Vert Out	Вертикально назовні
+Vertical	Вертикально
+Vertical alignment	Вертикальне вирівнювання
+Very Loose	Дуже розріджений
+Very Tight	Дуже ущільнений
+Video	Відео
+Video from File…	Відео з файлу…
+View	Перегляд
+Volume	Гучність
+Vortex	Вихор
+Waterfall	Водоспадна
+Wave	Хвиля
+Web Page or File	Вебсторінка або файл
+Wedge	Клин
+Weight	Товщина
+Wheel	Колесо
+Widescreen (13.333x7.5 in)	Широкоекранний (13,333×7,5 дюймів)
+Widescreen (16:9)	Широкоекранний (16:9)
+Width	Ширина
+Width (in):	Ширина (дюйми):
+Width:	Ширина:
+Width: 	Ширина:
+Wind	Вітер
+Window	Вікно
+Wipe	Витирання
+With Previous	Разом із попереднім
+WordArt	WordArt
+WordArt style {}	Стиль WordArt {}
+Words	Слова
+Wrap Text in Shape	Переносити текст у фігурі
+Wrap text in shape	Переносити текст у фігурі
+Yellow	Жовтий
+Your changes will be lost if you don't save them.	Якщо не зберегти, зміни будуть втрачені.
+Your name (comments):	Ваше ім’я (коментарі):
+Zoom	Масштаб
+Zoom In	Збільшити
+Zoom Out	Зменшити
+Zoom…	Масштаб…
+a) b) c)	a) b) c)
+a. b. c.	a. b. c.
+dropped file	перетягнутий файл
+i. ii. iii.	i. ii. iii.
+no presentation open	Немає відкритої презентації
+no slides	Немає слайдів
+no text insertion point	Немає позиції введення тексту
+nothing selected	Нічого не вибрано
+nothing to redo	Немає дій для повторення
+nothing to undo	Немає дій для скасування
+select text or a shape	Виберіть текст або фігуру
+select two or more objects	Виберіть два або більше об’єктів
+size (pt)	розмір (пт)
+tOGGLE cASE	tOGGLE cASE
+unknown interface language	Невідома мова інтерфейсу
+{ch}  Bullet	{ch}  Маркер
+{f} (Body)	{f} (Основний текст)
+{f} (Headings)	{f} (Заголовки)
+{name}: DeckCraft can't open this kind of file	{name}: DeckCraft не може відкрити файл цього типу
+{n} Column{}	{n} Стовпець{}
+{r} pt	{r} пт
+{r} pt glow	світіння {r} пт
+{w} pt	{w} пт
+{} ({} slides)	{} ({} слайдів)
+{} Slide Master	{} Зразок слайдів
+{} contributors · {} commits	Учасники: {} · Коміти: {}
+{} presentations	{} презентацій
+{}x{} Table	Таблиця {}×{}
+“{}” is not available yet.	«{}» ще недоступно.
+−Bin	−Бін
+▶ Play All	▶ Відтворити все
+◀ Previous	◀ Назад
+✏ on	✏ увімкнено
diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index bef64a4f2..c5e6b3c18 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -11,6 +11,7 @@ pub mod control;
 pub mod credits;
 pub mod dialogs;
 pub mod fillui;
+pub mod i18n;
 pub mod icons;
 pub mod media;
 pub mod menus;
@@ -43,6 +44,8 @@ pub type Inbox = std::sync::Arc<std::sync::Mutex<Vec<(String, Vec<u8>)>>>;
 /// Platform services injected by the host (desktop or web).
 #[derive(Default)]
 pub struct Services {
+    /// Host locale (OS on desktop, navigator.language on the web).
+    pub system_locale: Option<String>,
     /// Open-file dialog for a purpose (`open`, `picture`, `audio`, `video`) → path.
     pub pick_open: Option<PickFn>,
     /// Save dialog with a suggested name → path.
@@ -75,6 +78,7 @@ pub enum ViewMode {
 #[derive(Clone, Debug, Serialize, Deserialize)]
 #[serde(default, rename_all = "camelCase")]
 pub struct UiState {
+    pub interface_language: i18n::Language,
     pub brightness: theme::Brightness,
     pub tab: String,
     pub ribbon_collapsed: bool,
@@ -103,6 +107,7 @@ pub struct UiState {
 impl Default for UiState {
     fn default() -> Self {
         UiState {
+            interface_language: i18n::Language::System,
             brightness: theme::Brightness::Light,
             tab: "Home".into(),
             ribbon_collapsed: false,
@@ -154,6 +159,7 @@ pub const UI_COMMANDS: &[(&str, &str, Option<&str>, &str)] = &[
     ("app.about", "About DeckCraft", None, "{}"),
     ("app.palette", "Command Palette", Some("Cmd+Shift+P"), "{}"),
     ("app.preferences", "Preferences…", Some("Cmd+,"), "{}"),
+    ("app.language", "Interface Language", None, "{language: system|en|uk|pt-BR}"),
     ("app.openDialog", "Open…", None, "{purpose?}"),
     ("app.insertPictureDialog", "Picture from File…", None, "{}"),
     ("app.insertAudioDialog", "Audio from File…", None, "{}"),
@@ -253,12 +259,15 @@ impl SlideApp {
     }
 
     pub fn set_status(&mut self, msg: impl Into<String>) {
-        self.status = Some((msg.into(), now_ms()));
+        i18n::set_current(self.ui.interface_language.resolve(self.services.system_locale.as_deref()));
+        let msg = msg.into();
+        self.status = Some((i18n::tr(&msg).to_string(), now_ms()));
     }
 
     /// Run a command by id (UI commands here, everything else in the engine). Errors show in the
     /// status bar and are returned.
     pub fn run(&mut self, id: &str, params: Value) -> Result<Value, String> {
+        i18n::set_current(self.ui.interface_language.resolve(self.services.system_locale.as_deref()));
         let r = if UI_COMMANDS.iter().any(|c| c.0 == id) {
             self.run_ui(id, &params)
         } else {
@@ -345,6 +354,17 @@ impl SlideApp {
             }
             "app.about" => self.dialog = Some(dialogs::Dialog::new("about")),
             "app.palette" => self.palette = Some((String::new(), 0)),
+            "app.language" => {
+                let language = p.get("language").and_then(Value::as_str).unwrap_or("system");
+                self.ui.interface_language = match language {
+                    "system" => i18n::Language::System,
+                    "en" => i18n::Language::En,
+                    "uk" => i18n::Language::Uk,
+                    "pt-BR" => i18n::Language::PtBr,
+                    _ => return Err("unknown interface language".into()),
+                };
+                i18n::set_current(self.ui.interface_language.resolve(self.services.system_locale.as_deref()));
+            }
             "app.preferences" => self.dialog = Some(dialogs::Dialog::new("preferences")),
             "app.openDialog" => self.pick_and_open(),
             "app.insertPictureDialog" => self.pick_and_insert("picture", "insert.picture"),
@@ -418,7 +438,7 @@ impl SlideApp {
             if let Some(path) = pick(&suggested) {
                 match self.session.execute("file.saveAs", &json!({"path": path})) {
                     Ok(_) => {
-                        self.set_status(format!("Saved {path}"));
+                        self.set_status(crate::i18n::format("Saved {path}", std::slice::from_ref(&path)));
                         self.ui.recent.retain(|p| *p != path);
                         self.ui.recent.insert(0, path);
                     }
@@ -516,7 +536,7 @@ impl SlideApp {
         } else if lower.ends_with(".txt") || lower.ends_with(".md") {
             "slide.fromOutline"
         } else {
-            self.set_status(format!("{name}: DeckCraft can't open this kind of file"));
+            self.set_status(crate::i18n::format("{name}: DeckCraft can't open this kind of file", &[(name).to_string()]));
             return;
         };
         let p = if cmd == "slide.fromOutline" { json!({"text": String::from_utf8_lossy(bytes)}) } else { json!({"name": name, "data": data}) };
@@ -530,6 +550,7 @@ impl SlideApp {
 
     /// Per-frame logic before layout: styles, control requests, screenshots, shortcuts.
     pub fn logic(&mut self, ctx: &egui::Context) {
+        i18n::set_current(self.ui.interface_language.resolve(self.services.system_locale.as_deref()));
         let scale = self.ui.ui_scale.clamp(0.5, 3.0);
         if (ctx.zoom_factor() - scale).abs() > 1e-3 {
             ctx.set_zoom_factor(scale);
@@ -574,7 +595,7 @@ impl SlideApp {
             if self.session.documents().iter().any(|d| d.is_dirty())
                 && let Err(e) = self.session.execute("file.recovery.save", &json!({}))
             {
-                self.set_status(format!("Couldn't save AutoRecover information: {e}"));
+                self.set_status(crate::i18n::format("Couldn't save AutoRecover information: {e}", &[(e).to_string()]));
             }
         }
         // On the web, dropped files can only be read asynchronously: the host reads them and
@@ -682,6 +703,7 @@ impl SlideApp {
 
     /// Lay out the whole window.
     pub fn ui(&mut self, ui: &mut egui::Ui) {
+        i18n::set_current(self.ui.interface_language.resolve(self.services.system_locale.as_deref()));
         let ctx = ui.ctx().clone();
         if !self.fonts_ready {
             ctx.request_repaint();
diff --git a/crates/ui-egui/src/media.rs b/crates/ui-egui/src/media.rs
index f887c2b21..a5a939770 100644
--- a/crates/ui-egui/src/media.rs
+++ b/crates/ui-egui/src/media.rs
@@ -380,7 +380,7 @@ pub fn control_bar(ui: &mut Ui, rect: Rect, status: Option<&VoiceStatus>, clip:
     // Time label on the right, timeline between.
     let label = clock(pos);
     let label_w = 64.0;
-    painter.text(pos2(rect.max.x - 6.0, rect.center().y), Align2::RIGHT_CENTER, label, egui::FontId::monospace(11.0), white);
+    painter.text(pos2(rect.max.x - 6.0, rect.center().y), Align2::RIGHT_CENTER, &label, egui::FontId::monospace(11.0), white);
     let track = Rect::from_min_max(pos2(x + 6.0, rect.center().y - 3.0), pos2(rect.max.x - label_w - 6.0, rect.center().y + 3.0));
     if track.width() > 10.0 {
         painter.rect_filled(track, CornerRadius::same(3), Color32::from_gray(90));
@@ -414,7 +414,7 @@ pub fn control_bar(ui: &mut Ui, rect: Rect, status: Option<&VoiceStatus>, clip:
         painter.text(
             pos2(rect.min.x, rect.max.y + 3.0),
             Align2::LEFT_TOP,
-            format!("No sound: {err}"),
+            crate::i18n::format("No sound: {err}", std::slice::from_ref(err)),
             egui::FontId::proportional(10.0),
             Color32::from_rgb(0xC0, 0x40, 0x40),
         );
diff --git a/crates/ui-egui/src/menus.rs b/crates/ui-egui/src/menus.rs
index 9349dc360..c46eb0e15 100644
--- a/crates/ui-egui/src/menus.rs
+++ b/crates/ui-egui/src/menus.rs
@@ -63,7 +63,12 @@ pub fn palette(app: &mut SlideApp, ctx: &egui::Context) {
         .anchor(egui::Align2::CENTER_TOP, egui::vec2(0.0, 90.0))
         .fixed_size(egui::vec2(520.0, 380.0))
         .show(ctx, |ui| {
-            let r = ui.add(egui::TextEdit::singleline(&mut query).hint_text("Search commands…").desired_width(f32::INFINITY).font(theme::font(15.0)));
+            let r = ui.add(
+                egui::TextEdit::singleline(&mut query)
+                    .hint_text(crate::i18n::tr("Search commands…"))
+                    .desired_width(f32::INFINITY)
+                    .font(theme::font(15.0)),
+            );
             r.request_focus();
             let q = query.to_lowercase();
             let mut items: Vec<(String, String, Option<&'static str>)> = app
@@ -71,8 +76,8 @@ pub fn palette(app: &mut SlideApp, ctx: &egui::Context) {
                 .commands()
                 .into_iter()
                 .filter(|c| c.enabled)
-                .map(|c| (c.id.to_string(), c.label.to_string(), c.shortcut))
-                .chain(crate::UI_COMMANDS.iter().map(|c| (c.0.to_string(), c.1.to_string(), c.2)))
+                .map(|c| (c.id.to_string(), crate::i18n::tr(c.label).to_string(), c.shortcut))
+                .chain(crate::UI_COMMANDS.iter().map(|c| (c.0.to_string(), crate::i18n::tr(c.1).to_string(), c.2)))
                 .filter(|(id, label, _)| q.is_empty() || label.to_lowercase().contains(&q) || id.to_lowercase().contains(&q))
                 .collect();
             items.sort_by_key(|(_, l, _)| !l.to_lowercase().starts_with(&q));
@@ -100,7 +105,7 @@ pub fn palette(app: &mut SlideApp, ctx: &egui::Context) {
             egui::ScrollArea::vertical().max_height(320.0).show(ui, |ui| {
                 for (k, (id, label, sc)) in items.iter().enumerate() {
                     let r = ui.horizontal(|ui| {
-                        let resp = ui.selectable_label(k == sel, label);
+                        let resp = ui.selectable_label(k == sel, crate::i18n::tr(label));
                         if let Some(s) = sc {
                             ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                                 ui.label(egui::RichText::new(crate::ribbon::pretty_shortcut(s)).color(t.text_faint));
diff --git a/crates/ui-egui/src/panes.rs b/crates/ui-egui/src/panes.rs
index fff1da466..516b7d3f7 100644
--- a/crates/ui-egui/src/panes.rs
+++ b/crates/ui-egui/src/panes.rs
@@ -30,7 +30,7 @@ pub fn show(app: &mut SlideApp, ui: &mut Ui) {
                 _ => "Pane",
             };
             ui.horizontal(|ui| {
-                ui.label(egui::RichText::new(title).font(theme::bold(16.0)));
+                ui.label(egui::RichText::new(crate::i18n::tr(title)).font(theme::bold(16.0)));
                 ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                     let (r, resp) = ui.allocate_exact_size(vec2(20.0, 20.0), Sense::click());
                     if resp.hovered() {
@@ -72,7 +72,7 @@ fn color_button(
 ) {
     let sc = scheme(app);
     ui.horizontal(|ui| {
-        ui.label(label);
+        ui.label(crate::i18n::tr(label));
         ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
             let r = widgets::drop_button(ui, "Color", vec2(70.0, 22.0), true);
             widgets::color_popup(&r).show(|ui| {
@@ -89,7 +89,7 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
     let Some(st) = app.session.active() else { return };
     let Some(sh) = st.selected_shapes().first().map(|s| (*s).clone()) else {
-        ui.label(egui::RichText::new("Select a shape to format it.").color(t.text_dim));
+        ui.label(egui::RichText::new(crate::i18n::tr("Select a shape to format it.")).color(t.text_dim));
         return;
     };
     let x = deckcraft_engine::cmd::xfrm_of(&st.doc, &st.selection, &sh);
@@ -115,7 +115,7 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
     ui.separator();
     match app.ui.format_tab.as_str() {
         "effects" => {
-            ui.label(egui::RichText::new("Shadow").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Shadow")).font(theme::bold(13.0)));
             ui.horizontal_wrapped(|ui| {
                 for (l, v) in [
                     ("None", "none"),
@@ -125,54 +125,54 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
                     ("Inner", "inner"),
                     ("Perspective", "perspective"),
                 ] {
-                    if ui.button(l).clicked() {
+                    if ui.button(crate::i18n::tr(l)).clicked() {
                         run(app, "shape.effects", json!({"shadow": v}));
                     }
                 }
             });
             ui.add_space(6.0);
-            ui.label(egui::RichText::new("Reflection").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Reflection")).font(theme::bold(13.0)));
             ui.horizontal_wrapped(|ui| {
                 for (l, v) in [("None", "none"), ("Tight", "tight"), ("Half", "half"), ("Full", "full")] {
-                    if ui.button(l).clicked() {
+                    if ui.button(crate::i18n::tr(l)).clicked() {
                         run(app, "shape.effects", json!({"reflection": v}));
                     }
                 }
             });
             ui.add_space(6.0);
-            ui.label(egui::RichText::new("Glow").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Glow")).font(theme::bold(13.0)));
             let mut g = sh.effects.as_ref().and_then(|e| e.glow.as_ref().map(|g| g.radius)).unwrap_or(0.0);
-            if ui.add(egui::Slider::new(&mut g, 0.0..=40.0).text("size (pt)")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut g, 0.0..=40.0).text(crate::i18n::tr("size (pt)"))).drag_stopped() {
                 run(app, "shape.effects", json!({"glow": if g > 0.0 { json!(g) } else { Value::Null }}));
             }
-            ui.label(egui::RichText::new("Soft Edges").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Soft Edges")).font(theme::bold(13.0)));
             let mut s = sh.effects.as_ref().and_then(|e| e.soft_edge).unwrap_or(0.0);
-            if ui.add(egui::Slider::new(&mut s, 0.0..=50.0).text("size (pt)")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut s, 0.0..=50.0).text(crate::i18n::tr("size (pt)"))).drag_stopped() {
                 run(app, "shape.effects", json!({"softEdges": s}));
             }
-            if ui.button("Reset Effects").clicked() {
+            if ui.button(crate::i18n::tr("Reset Effects")).clicked() {
                 run(app, "shape.effects", json!({"reset": true}));
             }
         }
         "size" => {
             let mut fields = |ui: &mut Ui, label: &str, id: &str, v: f64, key: &str, cmd: &str, unit: f64| {
                 ui.horizontal(|ui| {
-                    ui.add_sized(vec2(90.0, 20.0), egui::Label::new(label));
+                    ui.add_sized(vec2(90.0, 20.0), egui::Label::new(crate::i18n::tr(label)));
                     if let Some(nv) = widgets::spinner(ui, id, v / unit, 0.1, if unit == 72.0 { "\"" } else { "°" }, 70.0) {
                         run(app, cmd, json!({key: nv * unit}));
                     }
                 });
             };
-            ui.label(egui::RichText::new("Size").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Size")).font(theme::bold(13.0)));
             fields(ui, "Height", "fh", x.h, "h", "shape.resize", 72.0);
             fields(ui, "Width", "fw", x.w, "w", "shape.resize", 72.0);
             fields(ui, "Rotation", "fr", x.rot, "deg", "shape.rotate", 1.0);
             ui.add_space(6.0);
-            ui.label(egui::RichText::new("Position").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Position")).font(theme::bold(13.0)));
             fields(ui, "Horizontal", "fx", x.x, "x", "shape.move", 72.0);
             fields(ui, "Vertical", "fy", x.y, "y", "shape.move", 72.0);
             ui.add_space(6.0);
-            ui.label(egui::RichText::new("Alt Text").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Alt Text")).font(theme::bold(13.0)));
             let id = ui.id().with(("alt", sh.id.0));
             let mut alt: String = ui.data_mut(|d| d.get_temp(id).unwrap_or_else(|| sh.descr.clone()));
             let r = ui.add(egui::TextEdit::multiline(&mut alt).desired_rows(3).desired_width(f32::INFINITY));
@@ -182,28 +182,28 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
             ui.data_mut(|d| d.insert_temp(id, alt));
         }
         "text" => {
-            ui.label(egui::RichText::new("Text Box").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Text Box")).font(theme::bold(13.0)));
             ui.horizontal(|ui| {
-                ui.label("Vertical alignment");
+                ui.label(crate::i18n::tr("Vertical alignment"));
                 for (l, a) in [("Top", "top"), ("Middle", "middle"), ("Bottom", "bottom")] {
-                    if ui.small_button(l).clicked() {
+                    if ui.small_button(crate::i18n::tr(l)).clicked() {
                         run(app, "format.anchor", json!({"anchor": a}));
                     }
                 }
             });
             ui.horizontal_wrapped(|ui| {
                 for (l, m) in [("Do not Autofit", "none"), ("Shrink text on overflow", "shrink"), ("Resize shape to fit text", "resize")] {
-                    if ui.small_button(l).clicked() {
+                    if ui.small_button(crate::i18n::tr(l)).clicked() {
                         run(app, "format.autofit", json!({"mode": m}));
                     }
                 }
             });
             let wrap = sh.text.as_ref().and_then(|t| t.body.wrap).unwrap_or(true);
             let mut w = wrap;
-            if ui.checkbox(&mut w, "Wrap text in shape").changed() {
+            if ui.checkbox(&mut w, crate::i18n::tr("Wrap text in shape")).changed() {
                 run(app, "format.wrap", json!({"on": w}));
             }
-            ui.label("Margins (pt)");
+            ui.label(crate::i18n::tr("Margins (pt)"));
             let b = sh.text.as_ref().map(|t| t.body.clone()).unwrap_or_default();
             for (l, k, v) in [
                 ("Left", "left", b.inset_l.unwrap_or(7.2)),
@@ -212,14 +212,14 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
                 ("Bottom", "bottom", b.inset_b.unwrap_or(3.6)),
             ] {
                 ui.horizontal(|ui| {
-                    ui.add_sized(vec2(60.0, 20.0), egui::Label::new(l));
+                    ui.add_sized(vec2(60.0, 20.0), egui::Label::new(crate::i18n::tr(l)));
                     if let Some(nv) = widgets::spinner(ui, &format!("m{k}"), v, 1.0, " pt", 60.0) {
                         run(app, "format.margins", json!({k: nv.max(0.0)}));
                     }
                 });
             }
             ui.horizontal(|ui| {
-                ui.label("Columns");
+                ui.label(crate::i18n::tr("Columns"));
                 for n in 1..=3 {
                     if ui.small_button(n.to_string()).clicked() {
                         run(app, "format.columns", json!({"count": n, "spacing": 18}));
@@ -230,29 +230,29 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
         "picture" => {
             let adj = if let ShapeKind::Picture { fill } = &sh.kind { fill.adjust.clone() } else { Default::default() };
             let mut b = adj.brightness as f32;
-            if ui.add(egui::Slider::new(&mut b, -1.0..=1.0).text("Brightness")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut b, -1.0..=1.0).text(crate::i18n::tr("Brightness"))).drag_stopped() {
                 run(app, "picture.adjust", json!({"brightness": b}));
             }
             let mut c = adj.contrast as f32;
-            if ui.add(egui::Slider::new(&mut c, -1.0..=1.0).text("Contrast")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut c, -1.0..=1.0).text(crate::i18n::tr("Contrast"))).drag_stopped() {
                 run(app, "picture.adjust", json!({"contrast": c}));
             }
             let mut s = adj.saturation.unwrap_or(1.0) as f32;
-            if ui.add(egui::Slider::new(&mut s, 0.0..=4.0).text("Saturation")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut s, 0.0..=4.0).text(crate::i18n::tr("Saturation"))).drag_stopped() {
                 run(app, "picture.adjust", json!({"saturation": s}));
             }
             let alpha = if let ShapeKind::Picture { fill } = &sh.kind { fill.alpha.unwrap_or(1.0) } else { 1.0 };
             let mut tr = (1.0 - alpha) as f32;
-            if ui.add(egui::Slider::new(&mut tr, 0.0..=1.0).text("Transparency")).drag_stopped() {
+            if ui.add(egui::Slider::new(&mut tr, 0.0..=1.0).text(crate::i18n::tr("Transparency"))).drag_stopped() {
                 run(app, "picture.adjust", json!({"transparency": tr}));
             }
-            if ui.button("Reset Picture").clicked() {
+            if ui.button(crate::i18n::tr("Reset Picture")).clicked() {
                 run(app, "picture.reset", json!({}));
             }
         }
         _ => {
             // Fill & Line.
-            ui.label(egui::RichText::new("Fill").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Fill")).font(theme::bold(13.0)));
             let kind = match &sh.fill {
                 None => "auto",
                 Some(Fill::None) => "none",
@@ -265,7 +265,7 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
             for (l, k) in
                 [("No fill", "none"), ("Solid fill", "solid"), ("Gradient fill", "gradient"), ("Pattern fill", "pattern"), ("Automatic", "auto")]
             {
-                if ui.radio(kind == k, l).clicked() {
+                if ui.radio(kind == k, crate::i18n::tr(l)).clicked() {
                     match k {
                         "none" => run(app, "shape.fill", json!({"none": true})),
                         "solid" => run(app, "shape.fill", json!({"color": "accent1"})),
@@ -284,7 +284,7 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
                 None => ("shape.fill".into(), json!({"none": true})),
             });
             ui.horizontal(|ui| {
-                ui.label("Transparency");
+                ui.label(crate::i18n::tr("Transparency"));
                 let id = ui.id().with("ftr");
                 let mut v: f32 = ui.data_mut(|d| d.get_temp(id).unwrap_or(0.0));
                 let r = ui.add(egui::Slider::new(&mut v, 0.0..=100.0).suffix("%"));
@@ -299,21 +299,21 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
                     run(app, "shape.fill", json!({"gradient": crate::fillui::gradient_json(&ng)}));
                 }
                 let mut rot = g.rotate_with_shape;
-                if ui.checkbox(&mut rot, "Rotate with shape").changed() {
+                if ui.checkbox(&mut rot, crate::i18n::tr("Rotate with shape")).changed() {
                     let ng = deckcraft_model::style::Gradient { rotate_with_shape: rot, ..g.clone() };
                     run(app, "shape.fill", json!({"gradient": crate::fillui::gradient_json(&ng)}));
                 }
             }
             ui.add_space(8.0);
-            ui.label(egui::RichText::new("Line").font(theme::bold(13.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr("Line")).font(theme::bold(13.0)));
             let none = matches!(sh.line.as_ref().and_then(|l| l.fill.as_ref()), Some(Fill::None));
-            if ui.radio(none, "No line").clicked() {
+            if ui.radio(none, crate::i18n::tr("No line")).clicked() {
                 run(app, "shape.line", json!({"none": true}));
             }
-            if ui.radio(!none && sh.line.is_some(), "Solid line").clicked() {
+            if ui.radio(!none && sh.line.is_some(), crate::i18n::tr("Solid line")).clicked() {
                 run(app, "shape.line", json!({"color": "tx1", "width": 1}));
             }
-            if ui.radio(sh.line.is_none(), "Automatic").clicked() {
+            if ui.radio(sh.line.is_none(), crate::i18n::tr("Automatic")).clicked() {
                 run(app, "shape.line", json!({"reset": true}));
             }
             color_button(app, ui, "Color", Some("No Outline"), |c| match c {
@@ -321,16 +321,16 @@ fn format_shape(app: &mut SlideApp, ui: &mut Ui) {
                 None => ("shape.line".into(), json!({"none": true})),
             });
             ui.horizontal(|ui| {
-                ui.label("Width");
+                ui.label(crate::i18n::tr("Width"));
                 let w = sh.line.as_ref().and_then(|l| l.width).unwrap_or(0.75);
                 if let Some(v) = widgets::spinner(ui, "lw", w, 0.25, " pt", 60.0) {
                     run(app, "shape.line", json!({"width": v.max(0.0)}));
                 }
             });
             ui.horizontal_wrapped(|ui| {
-                ui.label("Dash");
+                ui.label(crate::i18n::tr("Dash"));
                 for (l, d) in [("—", "solid"), ("···", "sysDot"), ("- -", "dash"), ("-·-", "dashDot"), ("— —", "lgDash")] {
-                    if ui.small_button(l).clicked() {
+                    if ui.small_button(crate::i18n::tr(l)).clicked() {
                         run(app, "shape.line", json!({"dash": d}));
                     }
                 }
@@ -355,7 +355,7 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
     };
     // What "Apply to All" re-applies: the current slide's background as command params.
     let mut current: Option<Value> = None;
-    ui.label(egui::RichText::new("Fill").font(theme::bold(13.0)));
+    ui.label(egui::RichText::new(crate::i18n::tr("Fill")).font(theme::bold(13.0)));
     for (l, k) in [
         ("Solid fill", "solid"),
         ("Gradient fill", "gradient"),
@@ -363,7 +363,7 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
         ("Pattern fill", "pattern"),
         ("Follow the layout", "auto"),
     ] {
-        if ui.radio(kind == k, l).clicked() && kind != k {
+        if ui.radio(kind == k, crate::i18n::tr(l)).clicked() && kind != k {
             match k {
                 "solid" => run(app, "design.background", json!({"color": "bg1"})),
                 "gradient" => {
@@ -389,7 +389,7 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
         Some(Fill::Solid { color }) => {
             current = Some(json!({"color": cref_param(color)}));
             ui.horizontal(|ui| {
-                ui.label("Color");
+                ui.label(crate::i18n::tr("Color"));
                 let r = widgets::drop_button(ui, "Color", vec2(70.0, 20.0), true);
                 widgets::color_popup(&r).show(|ui| {
                     if let Some(Some(c)) = widgets::color_grid(ui, &sc, None) {
@@ -415,7 +415,7 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
             });
             for (label, fg) in [("Foreground", true), ("Background", false)] {
                 ui.horizontal(|ui| {
-                    ui.label(label);
+                    ui.label(crate::i18n::tr(label));
                     let r = widgets::drop_button(ui, "Color", vec2(70.0, 20.0), true);
                     widgets::color_popup(&r).show(|ui| {
                         if let Some(Some(c)) = widgets::color_grid(ui, &sc, None) {
@@ -427,7 +427,7 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
             }
         }
         Some(Fill::Picture(_)) => {
-            if ui.button("Insert picture from file…").clicked()
+            if ui.button(crate::i18n::tr("Insert picture from file…")).clicked()
                 && let Some(pick) = app.services.pick_open.as_mut()
                 && let Some(path) = pick("picture")
                 && let Some(Ok(bytes)) = app.services.read.as_ref().map(|r| r(&path))
@@ -440,18 +440,18 @@ fn background(app: &mut SlideApp, ui: &mut Ui) {
     ui.add_space(4.0);
     let hide = app.session.active().and_then(|d| d.current_slide().map(|s| !s.show_master_shapes)).unwrap_or(false);
     let mut h = hide;
-    if ui.checkbox(&mut h, "Hide background graphics").changed() {
+    if ui.checkbox(&mut h, crate::i18n::tr("Hide background graphics")).changed() {
         run(app, "design.hideBackgroundGraphics", json!({"hide": h}));
     }
     ui.add_space(8.0);
     ui.horizontal(|ui| {
-        if ui.add_enabled(current.is_some(), egui::Button::new("Apply to All")).clicked()
+        if ui.add_enabled(current.is_some(), egui::Button::new(crate::i18n::tr("Apply to All"))).clicked()
             && let Some(Value::Object(mut o)) = current.clone()
         {
             o.insert("all".into(), json!(true));
             run(app, "design.background", Value::Object(o));
         }
-        if ui.button("Reset Background").clicked() {
+        if ui.button(crate::i18n::tr("Reset Background")).clicked() {
             run(app, "design.background", json!({"reset": true}));
         }
     });
@@ -465,7 +465,7 @@ fn animation(app: &mut SlideApp, ui: &mut Ui) {
     let names: Vec<(u32, String)> = st.shapes().iter().map(|s| (s.id.0, s.name.clone())).collect();
     let selected: Vec<u32> = st.selection.shapes.iter().map(|i| i.0).collect();
     ui.horizontal(|ui| {
-        if ui.button("▶ Play All").clicked() {
+        if ui.button(crate::i18n::tr("▶ Play All")).clicked() {
             let from = app.session.active().map(|d| d.selection.slide).unwrap_or(0);
             app.start_show(from, true);
             if let Some(s) = app.show.as_mut() {
@@ -476,7 +476,9 @@ fn animation(app: &mut SlideApp, ui: &mut Ui) {
     });
     ui.separator();
     if anims.is_empty() {
-        ui.label(egui::RichText::new("Select an object on the slide and add an animation from the Animations tab.").color(t.text_dim));
+        ui.label(
+            egui::RichText::new(crate::i18n::tr("Select an object on the slide and add an animation from the Animations tab.")).color(t.text_dim),
+        );
         return;
     }
     let mut click = 0;
@@ -484,7 +486,11 @@ fn animation(app: &mut SlideApp, ui: &mut Ui) {
         if a.start == AnimStart::OnClick {
             click += 1;
         }
-        let name = names.iter().find(|(id, _)| *id == a.shape.0).map(|(_, n)| n.clone()).unwrap_or_else(|| format!("Shape {}", a.shape));
+        let name = names
+            .iter()
+            .find(|(id, _)| *id == a.shape.0)
+            .map(|(_, n)| n.clone())
+            .unwrap_or_else(|| crate::i18n::format("Shape {}", &[(a.shape).to_string()]));
         let (r, resp) = ui.allocate_exact_size(vec2(ui.available_width(), 30.0), Sense::click());
         let sel = selected.contains(&a.shape.0);
         if sel || resp.hovered() {
@@ -525,21 +531,21 @@ fn animation(app: &mut SlideApp, ui: &mut Ui) {
         }
         resp.context_menu(|ui| {
             for (l, v) in [("Start On Click", "onClick"), ("Start With Previous", "withPrevious"), ("Start After Previous", "afterPrevious")] {
-                if ui.button(l).clicked() {
+                if ui.button(crate::i18n::tr(l)).clicked() {
                     run(app, "animation.timing", json!({"index": i, "start": v}));
                     ui.close();
                 }
             }
             ui.separator();
-            if ui.button("Move Up").clicked() {
+            if ui.button(crate::i18n::tr("Move Up")).clicked() {
                 run(app, "animation.move", json!({"index": i, "to": i.saturating_sub(1)}));
                 ui.close();
             }
-            if ui.button("Move Down").clicked() {
+            if ui.button(crate::i18n::tr("Move Down")).clicked() {
                 run(app, "animation.move", json!({"index": i, "to": i + 1}));
                 ui.close();
             }
-            if ui.button("Remove").clicked() {
+            if ui.button(crate::i18n::tr("Remove")).clicked() {
                 run(app, "animation.remove", json!({"index": i}));
                 ui.close();
             }
@@ -556,11 +562,11 @@ fn selection(app: &mut SlideApp, ui: &mut Ui) {
         st.shapes().iter().rev().map(|s| (s.id.0, s.name.clone(), s.hidden, s.kind_name())).collect();
     let selected: Vec<u32> = st.selection.shapes.iter().map(|i| i.0).collect();
     ui.horizontal(|ui| {
-        if ui.button("Show All").clicked() {
+        if ui.button(crate::i18n::tr("Show All")).clicked() {
             let ids: Vec<u32> = shapes.iter().map(|s| s.0).collect();
             run(app, "shape.visible", json!({"ids": ids, "visible": true}));
         }
-        if ui.button("Hide All").clicked() {
+        if ui.button(crate::i18n::tr("Hide All")).clicked() {
             let ids: Vec<u32> = shapes.iter().map(|s| s.0).collect();
             run(app, "shape.visible", json!({"ids": ids, "visible": false}));
         }
@@ -580,7 +586,7 @@ fn selection(app: &mut SlideApp, ui: &mut Ui) {
             theme::font(12.5),
             if hidden { t.text_faint } else { t.text },
         );
-        ui.painter().text(pos2(r.max.x - 34.0, r.center().y), Align2::RIGHT_CENTER, kind, theme::font(10.5), t.text_faint);
+        ui.painter().text(pos2(r.max.x - 34.0, r.center().y), Align2::RIGHT_CENTER, crate::i18n::tr(kind), theme::font(10.5), t.text_faint);
         let eye = Rect::from_center_size(pos2(r.max.x - 14.0, r.center().y), vec2(16.0, 16.0));
         icons::paint(ui.painter(), eye, if hidden { Icon::EyeOff } else { Icon::Eye }, t.text_dim, false);
         let eye_resp = ui.interact(eye, ui.id().with(("eye", id)), Sense::click());
@@ -596,15 +602,15 @@ fn selection(app: &mut SlideApp, ui: &mut Ui) {
             app.dialog = Some(d);
         }
         resp.context_menu(|ui| {
-            if ui.button("Bring Forward").clicked() {
+            if ui.button(crate::i18n::tr("Bring Forward")).clicked() {
                 run(app, "arrange.bringForward", json!({"ids": [id]}));
                 ui.close();
             }
-            if ui.button("Send Backward").clicked() {
+            if ui.button(crate::i18n::tr("Send Backward")).clicked() {
                 run(app, "arrange.sendBackward", json!({"ids": [id]}));
                 ui.close();
             }
-            if ui.button("Rename…").clicked() {
+            if ui.button(crate::i18n::tr("Rename…")).clicked() {
                 let mut d = crate::dialogs::Dialog::new("renameShape");
                 d.params = json!({"id": id, "name": name});
                 app.dialog = Some(d);
@@ -617,14 +623,14 @@ fn selection(app: &mut SlideApp, ui: &mut Ui) {
 
 fn comments(app: &mut SlideApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
-    if ui.button("+ New Comment").clicked() {
+    if ui.button(crate::i18n::tr("+ New Comment")).clicked() {
         app.dialog = Some(crate::dialogs::Dialog::new("comment"));
     }
     ui.separator();
     let Some(st) = app.session.active() else { return };
     let list = st.current_slide().map(|s| s.comments.clone()).unwrap_or_default();
     if list.is_empty() {
-        ui.label(egui::RichText::new("No comments on this slide.").color(t.text_dim));
+        ui.label(egui::RichText::new(crate::i18n::tr("No comments on this slide.")).color(t.text_dim));
     }
     for (i, c) in list.iter().enumerate() {
         egui::Frame::NONE.fill(t.chrome).corner_radius(CornerRadius::same(8)).inner_margin(egui::Margin::same(8)).show(ui, |ui| {
@@ -645,7 +651,7 @@ fn comments(app: &mut SlideApp, ui: &mut Ui) {
             ui.horizontal(|ui| {
                 let id = ui.id().with(("reply", i));
                 let mut txt: String = ui.data_mut(|d| d.get_temp(id).unwrap_or_default());
-                let r = ui.add(egui::TextEdit::singleline(&mut txt).hint_text("Reply…").desired_width(ui.available_width() - 70.0));
+                let r = ui.add(egui::TextEdit::singleline(&mut txt).hint_text(crate::i18n::tr("Reply…")).desired_width(ui.available_width() - 70.0));
                 if r.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter)) && !txt.trim().is_empty() {
                     run(app, "comment.reply", json!({"index": i, "text": txt}));
                     txt.clear();
@@ -666,7 +672,7 @@ fn comments(app: &mut SlideApp, ui: &mut Ui) {
 /// Design Ideas: offline suggestions — the current slide in each theme and layout variations.
 fn designer(app: &mut SlideApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
-    ui.label(egui::RichText::new("Pick a look for your slides. Ideas are generated on your device.").color(t.text_dim));
+    ui.label(egui::RichText::new(crate::i18n::tr("Pick a look for your slides. Ideas are generated on your device.")).color(t.text_dim));
     ui.add_space(6.0);
     let Some(st) = app.session.active() else { return };
     let doc = st.doc.clone();
diff --git a/crates/ui-egui/src/ribbon.rs b/crates/ui-egui/src/ribbon.rs
index c7c251efe..1ca42adc0 100644
--- a/crates/ui-egui/src/ribbon.rs
+++ b/crates/ui-egui/src/ribbon.rs
@@ -62,8 +62,11 @@ pub fn title_bar(app: &mut SlideApp, ui: &mut Ui) {
         if icon_toggle(&mut child, Icon::PlayFromStart, "Play from Start (F5)", has_doc, false).clicked() {
             app.start_show(0, false);
         }
-        let title =
-            app.session.active().map(|d| format!("{}{}", d.title(), if dirty { " — Edited" } else { "" })).unwrap_or_else(|| "DeckCraft".into());
+        let title = app
+            .session
+            .active()
+            .map(|d| format!("{}{}", d.title(), if dirty { crate::i18n::tr(" — Edited") } else { "" }))
+            .unwrap_or_else(|| "DeckCraft".into());
         ui.painter().text(rect.center(), Align2::CENTER_CENTER, title, theme::font(13.0), t.text);
         // Right side.
         let mut right = ui.new_child(
@@ -76,7 +79,7 @@ pub fn title_bar(app: &mut SlideApp, ui: &mut Ui) {
             app.palette = Some((String::new(), 0));
         }
         let share = right.add(
-            egui::Button::new(egui::RichText::new("  Present  ").color(t.accent_text).font(theme::bold(13.0)))
+            egui::Button::new(egui::RichText::new(crate::i18n::tr("  Present  ")).color(t.accent_text).font(theme::bold(13.0)))
                 .fill(t.accent)
                 .corner_radius(CornerRadius::same(13))
                 .min_size(vec2(84.0, 26.0)),
@@ -148,8 +151,13 @@ pub fn show(app: &mut SlideApp, ui: &mut Ui) {
         let y = rect.min.y + 2.0;
         let all: Vec<(&str, bool)> = TABS.iter().map(|s| (*s, false)).chain(ctx_tabs.iter().map(|s| (*s, true))).collect();
         for (name, contextual) in all {
+            let label = match name {
+                "Home" => crate::i18n::tr_context(name, "@ribbon:Home"),
+                "Insert" => crate::i18n::tr_context(name, "@ribbon:Insert"),
+                _ => crate::i18n::tr(name),
+            };
             let font = theme::font(13.0);
-            let w = ui.fonts_mut(|f| f.layout_no_wrap(name.to_string(), font.clone(), t.text).size().x) + 18.0;
+            let w = ui.fonts_mut(|f| f.layout_no_wrap(label.to_string(), font.clone(), t.text).size().x) + 18.0;
             let r = Rect::from_min_size(pos2(x, y), vec2(w, 24.0));
             let resp = ui.interact(r, ui.id().with(("tab", name)), Sense::click());
             let active = app.ui.tab == name;
@@ -158,7 +166,7 @@ pub fn show(app: &mut SlideApp, ui: &mut Ui) {
             }
             let col = if contextual { t.contextual } else { t.text };
             let f = if active { theme::bold(13.0) } else { font };
-            ui.painter().text(r.center(), Align2::CENTER_CENTER, name, f, col);
+            ui.painter().text(r.center(), Align2::CENTER_CENTER, label, f, col);
             if active {
                 let uw = (w - 20.0).max(16.0);
                 ui.painter().rect_filled(Rect::from_center_size(pos2(r.center().x, r.max.y - 1.0), vec2(uw, 3.0)), CornerRadius::same(1), t.accent);
@@ -234,6 +242,7 @@ fn toggle(app: &mut SlideApp, ui: &mut Ui, icon: Icon, label: &str, id: &str, on
 }
 
 fn tip(id: &str, label: &str) -> String {
+    let label = crate::i18n::tr(label);
     let sc = deckcraft_engine::find_command(id).and_then(|c| c.shortcut).or_else(|| crate::UI_COMMANDS.iter().find(|c| c.0 == id).and_then(|c| c.2));
     match sc {
         Some(s) => format!("{label} ({})", pretty_shortcut(s)),
@@ -266,18 +275,18 @@ pub fn fmt_state(app: &mut SlideApp) -> Value {
 fn clipboard_group(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let (main, arrow) = big_button_ex(ui, Icon::Paste, "Paste", enabled(app, "edit.paste"), true, false);
-        if main.on_hover_text("Paste (⌘V)").clicked() {
+        if main.on_hover_text(crate::i18n::tr("Paste (⌘V)")).clicked() {
             run(app, "edit.paste", json!({}));
         }
         if let Some(a) = arrow {
             egui::Popup::menu(&a).show(|ui| {
-                if ui.button("Paste").clicked() {
+                if ui.button(crate::i18n::tr("Paste")).clicked() {
                     run(app, "edit.paste", json!({}));
                 }
-                if ui.button("Paste and Match Formatting").clicked() {
+                if ui.button(crate::i18n::tr("Paste and Match Formatting")).clicked() {
                     run(app, "edit.pasteText", json!({}));
                 }
-                if ui.button("Paste Formatting").clicked() {
+                if ui.button(crate::i18n::tr("Paste Formatting")).clicked() {
                     run(app, "format.painterApply", json!({}));
                 }
             });
@@ -287,7 +296,8 @@ fn clipboard_group(app: &mut SlideApp, ui: &mut Ui) {
             small(app, ui, Icon::Copy, "Copy", "edit.copy", json!({}));
             let on = app.session.painter.is_some();
             let en = enabled(app, "format.painter");
-            let r = small_button(ui, Icon::FormatPainter, "Format", en, on).on_hover_text("Format Painter (double-click to keep it on)");
+            let r =
+                small_button(ui, Icon::FormatPainter, "Format", en, on).on_hover_text(crate::i18n::tr("Format Painter (double-click to keep it on)"));
             if r.double_clicked() {
                 run(app, "format.painter", json!({"sticky": true}));
             } else if r.clicked() {
@@ -352,17 +362,17 @@ fn layout_menu(app: &mut SlideApp, ui: &mut Ui, cmd: &str) {
 fn slides_group(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let (main, arrow) = big_button_ex(ui, Icon::NewSlide, "New\nSlide", enabled(app, "slide.new"), true, false);
-        if main.on_hover_text("New Slide (⇧⌘N)").clicked() {
+        if main.on_hover_text(crate::i18n::tr("New Slide (⇧⌘N)")).clicked() {
             run(app, "slide.new", json!({}));
         }
         if let Some(a) = arrow {
             egui::Popup::menu(&a).width(420.0).show(|ui| {
                 layout_menu(app, ui, "slide.new");
                 ui.separator();
-                if ui.button("Duplicate Selected Slides").clicked() {
+                if ui.button(crate::i18n::tr("Duplicate Selected Slides")).clicked() {
                     run(app, "slide.duplicate", json!({}));
                 }
-                if ui.button("Slides from Outline…").clicked() {
+                if ui.button(crate::i18n::tr("Slides from Outline…")).clicked() {
                     app.dialog = Some(crate::dialogs::Dialog::new("outline"));
                 }
             });
@@ -373,10 +383,10 @@ fn slides_group(app: &mut SlideApp, ui: &mut Ui) {
             small(app, ui, Icon::ResetSlide, "Reset", "slide.reset", json!({}));
             let (r, _) = small_button_ex(ui, Icon::Section, "Section", enabled(app, "section.add"), false, true);
             egui::Popup::menu(&r).show(|ui| {
-                if ui.button("Add Section").clicked() {
+                if ui.button(crate::i18n::tr("Add Section")).clicked() {
                     run(app, "section.add", json!({}));
                 }
-                if ui.button("Remove All Sections").clicked() {
+                if ui.button(crate::i18n::tr("Remove All Sections")).clicked() {
                     run(app, "section.removeAll", json!({}));
                 }
             });
@@ -408,9 +418,9 @@ fn font_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                 dropdown(ui, "font", &font, 150.0, en, |ui| {
                     for (k, f) in fams.iter().enumerate() {
                         let label = if k == 0 && theme_fonts.len() == 2 {
-                            format!("{f} (Headings)")
+                            crate::i18n::format("{f} (Headings)", std::slice::from_ref(f))
                         } else if k == 1 && theme_fonts.len() == 2 {
-                            format!("{f} (Body)")
+                            crate::i18n::format("{f} (Body)", std::slice::from_ref(f))
                         } else {
                             f.clone()
                         };
@@ -449,7 +459,7 @@ fn font_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                 let r = icon_toggle(ui, Icon::CharSpacing, "Character Spacing", en, false);
                 egui::Popup::menu(&r).show(|ui| {
                     for (label, pt) in [("Very Tight", -3.0), ("Tight", -1.5), ("Normal", 0.0), ("Loose", 3.0), ("Very Loose", 6.0)] {
-                        if ui.button(label).clicked() {
+                        if ui.button(crate::i18n::tr(label)).clicked() {
                             run(app, "format.spacing", json!({"pt": pt}));
                         }
                     }
@@ -463,7 +473,7 @@ fn font_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                         ("Capitalize Each Word", "title"),
                         ("tOGGLE cASE", "toggle"),
                     ] {
-                        if ui.button(label).clicked() {
+                        if ui.button(crate::i18n::tr(label)).clicked() {
                             run(app, "format.case", json!({"mode": mode}));
                         }
                     }
@@ -528,28 +538,28 @@ fn paragraph_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                 ui.spacing_mut().item_spacing.x = 1.0;
                 let b = |k: &str| st.get(k).and_then(Value::as_bool).unwrap_or(false);
                 let (m, a) = small_button_ex(ui, Icon::Bullets, "", en, b("bullets"), true);
-                if m.on_hover_text("Bullets").clicked() {
+                if m.on_hover_text(crate::i18n::tr("Bullets")).clicked() {
                     run(app, "format.bullets", json!({}));
                 }
                 if let Some(a) = a {
                     egui::Popup::menu(&a).show(|ui| {
-                        if ui.button("None").clicked() {
+                        if ui.button(crate::i18n::tr("None")).clicked() {
                             run(app, "format.bullets", json!({"on": false}));
                         }
                         for ch in ["•", "○", "■", "□", "◆", "➢", "✓", "–", "★"] {
-                            if ui.button(egui::RichText::new(format!("{ch}  Bullet")).size(14.0)).clicked() {
+                            if ui.button(egui::RichText::new(crate::i18n::format("{ch}  Bullet", &[(ch).to_string()])).size(14.0)).clicked() {
                                 run(app, "format.bullets", json!({"on": true, "char": ch}));
                             }
                         }
                     });
                 }
                 let (m, a) = small_button_ex(ui, Icon::Numbering, "", en, b("numbering"), true);
-                if m.on_hover_text("Numbering").clicked() {
+                if m.on_hover_text(crate::i18n::tr("Numbering")).clicked() {
                     run(app, "format.numbering", json!({}));
                 }
                 if let Some(a) = a {
                     egui::Popup::menu(&a).show(|ui| {
-                        if ui.button("None").clicked() {
+                        if ui.button(crate::i18n::tr("None")).clicked() {
                             run(app, "format.numbering", json!({"on": false}));
                         }
                         for (label, sch) in [
@@ -561,7 +571,7 @@ fn paragraph_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                             ("a) b) c)", "alphaLcParenR"),
                             ("a. b. c.", "alphaLcPeriod"),
                         ] {
-                            if ui.button(label).clicked() {
+                            if ui.button(crate::i18n::tr(label)).clicked() {
                                 run(app, "format.numbering", json!({"on": true, "scheme": sch}));
                             }
                         }
@@ -576,14 +586,17 @@ fn paragraph_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                             run(app, "format.lineSpacing", json!({"lines": v}));
                         }
                     }
-                    if ui.button("Line Spacing Options…").clicked() {
+                    if ui.button(crate::i18n::tr("Line Spacing Options…")).clicked() {
                         app.dialog = Some(crate::dialogs::Dialog::new("paragraph"));
                     }
                 });
                 let r = icon_toggle(ui, Icon::Columns, "Columns", en, false);
                 egui::Popup::menu(&r).show(|ui| {
                     for n in 1..=3 {
-                        if ui.button(format!("{n} Column{}", if n > 1 { "s" } else { "" })).clicked() {
+                        if ui
+                            .button(crate::i18n::count(n, if n == 1 { "Column" } else { "Columns" }, "стовпець|стовпці|стовпців", "coluna|colunas"))
+                            .clicked()
+                        {
                             run(app, "format.columns", json!({"count": n, "spacing": 18}));
                         }
                     }
@@ -605,7 +618,7 @@ fn paragraph_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                         ("Rotate all text 270°", "rotate270"),
                         ("Stacked", "stacked"),
                     ] {
-                        if ui.button(l).clicked() {
+                        if ui.button(crate::i18n::tr(l)).clicked() {
                             run(app, "format.direction", json!({"dir": d}));
                         }
                     }
@@ -613,7 +626,7 @@ fn paragraph_group(app: &mut SlideApp, ui: &mut Ui, st: &Value) {
                 let r = icon_toggle(ui, Icon::AlignText, "Align Text", en, false);
                 egui::Popup::menu(&r).show(|ui| {
                     for (l, a) in [("Top", "top"), ("Middle", "middle"), ("Bottom", "bottom")] {
-                        if ui.button(l).clicked() {
+                        if ui.button(crate::i18n::tr(l)).clicked() {
                             run(app, "format.anchor", json!({"anchor": a}));
                         }
                     }
@@ -630,7 +643,7 @@ pub fn shapes_gallery(ui: &mut Ui) -> Option<&'static str> {
     ui.set_max_width(330.0);
     egui::ScrollArea::vertical().max_height(420.0).show(ui, |ui| {
         for cat in deckcraft_geom::preset::Category::ALL {
-            ui.label(egui::RichText::new(cat.label()).font(theme::bold(12.0)));
+            ui.label(egui::RichText::new(crate::i18n::tr(cat.label())).font(theme::bold(12.0)));
             ui.horizontal_wrapped(|ui| {
                 ui.spacing_mut().item_spacing = vec2(1.0, 1.0);
                 for p in deckcraft_geom::preset::CATALOG.iter().filter(|p| p.category == cat) {
@@ -639,7 +652,7 @@ pub fn shapes_gallery(ui: &mut Ui) -> Option<&'static str> {
                         ui.painter().rect_filled(r, CornerRadius::same(3), t.hover);
                     }
                     paint_preset(ui.painter(), r.shrink(4.0), p.name, Color32::TRANSPARENT, t.text);
-                    if resp.on_hover_text(p.label).clicked() {
+                    if resp.on_hover_text(crate::i18n::tr(p.label)).clicked() {
                         out = Some(p.name);
                     }
                 }
@@ -650,7 +663,7 @@ pub fn shapes_gallery(ui: &mut Ui) -> Option<&'static str> {
                             ui.painter().rect_filled(r, CornerRadius::same(3), t.hover);
                         }
                         paint_freeform_icon(ui.painter(), r.shrink(5.0), name, t.text);
-                        if resp.on_hover_text(label).clicked() {
+                        if resp.on_hover_text(crate::i18n::tr(label)).clicked() {
                             out = Some(name);
                         }
                     }
@@ -724,7 +737,7 @@ fn kurbo_flatten(path: &deckcraft_geom::BezPath, mut f: impl FnMut(Fl)) {
 fn drawing_group(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let en = enabled(app, "shape.insert");
-        let r = big_button(ui, Icon::Shapes, "Shapes", en).on_hover_text("Shapes");
+        let r = big_button(ui, Icon::Shapes, "Shapes", en).on_hover_text(crate::i18n::tr("Shapes"));
         egui::Popup::menu(&r).show(|ui| {
             if let Some(p) = shapes_gallery(ui) {
                 app.session.set_tool(deckcraft_engine::ToolKind::Shape { preset: p.to_string() });
@@ -774,15 +787,15 @@ pub fn outline_menu(app: &mut SlideApp, ui: &mut Ui, sc: &deckcraft_color::Color
             None => run(app, "shape.line", json!({"none": true})),
         }
     }
-    ui.menu_button("Weight", |ui| {
+    ui.menu_button(crate::i18n::tr("Weight"), |ui| {
         for w in [0.25, 0.5, 0.75, 1.0, 1.5, 2.25, 3.0, 4.5, 6.0] {
-            if ui.button(format!("{w} pt")).clicked() {
+            if ui.button(crate::i18n::format("{w} pt", &[(w).to_string()])).clicked() {
                 run(app, "shape.line", json!({"width": w}));
                 ui.close();
             }
         }
     });
-    ui.menu_button("Dashes", |ui| {
+    ui.menu_button(crate::i18n::tr("Dashes"), |ui| {
         for (l, d) in [
             ("Solid", "solid"),
             ("Round Dot", "sysDot"),
@@ -792,13 +805,13 @@ pub fn outline_menu(app: &mut SlideApp, ui: &mut Ui, sc: &deckcraft_color::Color
             ("Long Dash", "lgDash"),
             ("Long Dash Dot", "lgDashDot"),
         ] {
-            if ui.button(l).clicked() {
+            if ui.button(crate::i18n::tr(l)).clicked() {
                 run(app, "shape.line", json!({"dash": d}));
                 ui.close();
             }
         }
     });
-    ui.menu_button("Arrows", |ui| {
+    ui.menu_button(crate::i18n::tr("Arrows"), |ui| {
         for (l, h, tl) in [
             ("None", "none", "none"),
             ("Arrow at end", "none", "triangle"),
@@ -807,7 +820,7 @@ pub fn outline_menu(app: &mut SlideApp, ui: &mut Ui, sc: &deckcraft_color::Color
             ("Stealth end", "none", "stealth"),
             ("Oval ends", "oval", "oval"),
         ] {
-            if ui.button(l).clicked() {
+            if ui.button(crate::i18n::tr(l)).clicked() {
                 run(app, "shape.line", json!({"head": h, "tail": tl}));
                 ui.close();
             }
@@ -816,7 +829,7 @@ pub fn outline_menu(app: &mut SlideApp, ui: &mut Ui, sc: &deckcraft_color::Color
 }
 
 pub fn effects_menu(app: &mut SlideApp, ui: &mut Ui) {
-    ui.menu_button("Shadow", |ui| {
+    ui.menu_button(crate::i18n::tr("Shadow"), |ui| {
         for (l, v) in [
             ("No Shadow", "none"),
             ("Outer", "outer"),
@@ -825,36 +838,36 @@ pub fn effects_menu(app: &mut SlideApp, ui: &mut Ui) {
             ("Inner", "inner"),
             ("Perspective", "perspective"),
         ] {
-            if ui.button(l).clicked() {
+            if ui.button(crate::i18n::tr(l)).clicked() {
                 run(app, "shape.effects", json!({"shadow": v}));
             }
         }
     });
-    ui.menu_button("Reflection", |ui| {
+    ui.menu_button(crate::i18n::tr("Reflection"), |ui| {
         for (l, v) in [("No Reflection", "none"), ("Tight", "tight"), ("Half", "half"), ("Full", "full")] {
-            if ui.button(l).clicked() {
+            if ui.button(crate::i18n::tr(l)).clicked() {
                 run(app, "shape.effects", json!({"reflection": v}));
             }
         }
     });
-    ui.menu_button("Glow", |ui| {
-        if ui.button("No Glow").clicked() {
+    ui.menu_button(crate::i18n::tr("Glow"), |ui| {
+        if ui.button(crate::i18n::tr("No Glow")).clicked() {
             run(app, "shape.effects", json!({"glow": null}));
         }
         for r in [5.0, 8.0, 11.0, 18.0] {
-            if ui.button(format!("{r} pt glow")).clicked() {
+            if ui.button(crate::i18n::format("{r} pt glow", &[(r).to_string()])).clicked() {
                 run(app, "shape.effects", json!({"glow": r}));
             }
         }
     });
-    ui.menu_button("Soft Edges", |ui| {
+    ui.menu_button(crate::i18n::tr("Soft Edges"), |ui| {
         for r in [0.0, 1.0, 2.5, 5.0, 10.0, 25.0] {
-            if ui.button(if r == 0.0 { "No Soft Edges".to_string() } else { format!("{r} pt") }).clicked() {
+            if ui.button(if r == 0.0 { "No Soft Edges".to_string() } else { crate::i18n::format("{r} pt", &[(r).to_string()]) }).clicked() {
                 run(app, "shape.effects", json!({"softEdges": r}));
             }
         }
     });
-    ui.menu_button("Bevel", |ui| {
+    ui.menu_button(crate::i18n::tr("Bevel"), |ui| {
         for b in [
             "none",
             "circle",
@@ -875,7 +888,7 @@ pub fn effects_menu(app: &mut SlideApp, ui: &mut Ui) {
             }
         }
     });
-    if ui.button("Format Shape…").clicked() {
+    if ui.button(crate::i18n::tr("Format Shape…")).clicked() {
         let _ = app.run("view.pane", json!({"pane": "format", "tab": "effects"}));
     }
 }
@@ -904,7 +917,7 @@ fn quick_styles(app: &mut SlideApp, ui: &mut Ui) {
                     _ => (c, c.lerp_to_gamma(Color32::BLACK, 0.3), Color32::WHITE),
                 };
                 p.rect(rect.shrink(2.0), CornerRadius::same(3), fill, Stroke::new(1.5, stroke), egui::StrokeKind::Inside);
-                p.text(rect.center(), Align2::CENTER_CENTER, "Abc", theme::font(11.0), text);
+                p.text(rect.center(), Align2::CENTER_CENTER, crate::i18n::tr("Abc"), theme::font(11.0), text);
                 if resp.hovered() {
                     p.rect_stroke(rect, CornerRadius::same(3), Stroke::new(1.5, Tokens::get(ui.ctx()).accent), egui::StrokeKind::Inside);
                 }
@@ -919,7 +932,7 @@ fn quick_styles(app: &mut SlideApp, ui: &mut Ui) {
 }
 
 pub fn arrange_menu(app: &mut SlideApp, ui: &mut Ui) {
-    ui.label(egui::RichText::new("Order Objects").font(theme::bold(12.0)));
+    ui.label(egui::RichText::new(crate::i18n::tr("Order Objects")).font(theme::bold(12.0)));
     for (l, id, ic) in [
         ("Bring to Front", "arrange.bringToFront", Icon::BringToFront),
         ("Send to Back", "arrange.sendToBack", Icon::SendToBack),
@@ -929,20 +942,20 @@ pub fn arrange_menu(app: &mut SlideApp, ui: &mut Ui) {
         menu_item(app, ui, ic, l, id, json!({}));
     }
     ui.separator();
-    ui.label(egui::RichText::new("Group Objects").font(theme::bold(12.0)));
+    ui.label(egui::RichText::new(crate::i18n::tr("Group Objects")).font(theme::bold(12.0)));
     menu_item(app, ui, Icon::Group, "Group", "arrange.group", json!({}));
     menu_item(app, ui, Icon::Ungroup, "Ungroup", "arrange.ungroup", json!({}));
     menu_item(app, ui, Icon::Group, "Regroup", "arrange.regroup", json!({}));
     ui.separator();
-    ui.label(egui::RichText::new("Position Objects").font(theme::bold(12.0)));
-    ui.menu_button("Align", |ui| align_menu(app, ui));
-    ui.menu_button("Rotate", |ui| {
+    ui.label(egui::RichText::new(crate::i18n::tr("Position Objects")).font(theme::bold(12.0)));
+    ui.menu_button(crate::i18n::tr("Align"), |ui| align_menu(app, ui));
+    ui.menu_button(crate::i18n::tr("Rotate"), |ui| {
         menu_item(app, ui, Icon::RotateRight, "Rotate Right 90°", "arrange.rotateRight", json!({}));
         menu_item(app, ui, Icon::RotateLeft, "Rotate Left 90°", "arrange.rotateLeft", json!({}));
         menu_item(app, ui, Icon::FlipV, "Flip Vertical", "arrange.flipVertical", json!({}));
         menu_item(app, ui, Icon::FlipH, "Flip Horizontal", "arrange.flipHorizontal", json!({}));
     });
-    if ui.button("Selection Pane…").clicked() {
+    if ui.button(crate::i18n::tr("Selection Pane…")).clicked() {
         let _ = app.run("view.pane", json!({"pane": "selection"}));
         ui.close();
     }
@@ -1008,7 +1021,7 @@ fn insert(app: &mut SlideApp, ui: &mut Ui) {
                 ui.close();
             }
             ui.separator();
-            if ui.button("Insert Table…").clicked() {
+            if ui.button(crate::i18n::tr("Insert Table…")).clicked() {
                 app.dialog = Some(crate::dialogs::Dialog::new("table"));
                 ui.close();
             }
@@ -1017,7 +1030,7 @@ fn insert(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         big(app, ui, Icon::Picture, "Pictures", "app.insertPictureDialog", json!({}));
         let r = big_button(ui, Icon::Screenshot, "Screenshot", false);
-        let _ = r.on_hover_text("Screenshot (not available yet)");
+        let _ = r.on_hover_text(crate::i18n::tr("Screenshot (not available yet)"));
     });
     group(ui, |ui| {
         let r = big_button(ui, Icon::Shapes, "Shapes", enabled(app, "shape.insert"));
@@ -1032,7 +1045,7 @@ fn insert(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::Chart, "Chart", enabled(app, "insert.chart"));
         egui::Popup::menu(&r).show(|ui| {
             for k in deckcraft_model::chart::ChartType::MAIN {
-                if ui.button(k.label()).clicked() {
+                if ui.button(crate::i18n::tr(k.label())).clicked() {
                     run(app, "insert.chart", json!({"type": format!("{k:?}")}));
                 }
             }
@@ -1043,7 +1056,7 @@ fn insert(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::Action, "Action", enabled(app, "insert.actionButton"));
         egui::Popup::menu(&r).show(|ui| {
             for k in ["back", "forward", "beginning", "end", "home", "information", "return", "movie", "document", "sound", "help", "custom"] {
-                if ui.button(format!("Action Button: {k}")).clicked() {
+                if ui.button(crate::i18n::format("Action Button: {k}", &[(k).to_string()])).clicked() {
                     run(app, "insert.actionButton", json!({"kind": k}));
                 }
             }
@@ -1058,7 +1071,7 @@ fn insert(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::WordArt, "WordArt", enabled(app, "insert.wordArt"));
         egui::Popup::menu(&r).show(|ui| {
             for i in 0..6 {
-                if ui.button(format!("WordArt style {}", i + 1)).clicked() {
+                if ui.button(crate::i18n::format("WordArt style {}", &[(i + 1).to_string()])).clicked() {
                     run(app, "insert.wordArt", json!({"style": i}));
                 }
             }
@@ -1082,8 +1095,8 @@ pub fn table_grid_picker(ui: &mut Ui) -> Option<(usize, usize)> {
     let id = ui.id().with("tgrid");
     let mut hover: (usize, usize) = ui.data_mut(|d| d.get_temp(id).unwrap_or((0, 0)));
     let cell = 16.0;
-    let label = if hover.0 > 0 { format!("{}x{} Table", hover.1, hover.0) } else { "Insert Table".into() };
-    ui.label(label);
+    let label = if hover.0 > 0 { crate::i18n::format("{}x{} Table", &[(hover.1).to_string(), (hover.0).to_string()]) } else { "Insert Table".into() };
+    ui.label(crate::i18n::tr(&label));
     let (rect, resp) = ui.allocate_exact_size(vec2(10.0 * (cell + 2.0), 8.0 * (cell + 2.0)), Sense::click());
     if let Some(p) = resp.hover_pos() {
         let c = ((p.x - rect.min.x) / (cell + 2.0)).floor() as usize + 1;
@@ -1143,7 +1156,7 @@ fn icon_library(app: &mut SlideApp, ui: &mut Ui) {
                 ui.painter().rect_filled(r, CornerRadius::same(4), t.hover);
             }
             paint_preset(ui.painter(), r.shrink(6.0), preset, t.text, t.text);
-            if resp.on_hover_text(label).clicked() {
+            if resp.on_hover_text(crate::i18n::tr(label)).clicked() {
                 let size = app.session.active().map(|d| d.doc.slide_size).unwrap_or(deckcraft_model::defaults::WIDE);
                 let _ = app.run("shape.insert", json!({"preset": preset, "rect": [size.width / 2.0 - 48.0, size.height / 2.0 - 48.0, 96, 96]}));
                 let _ = app.run("shape.fill", json!({"color": "tx1"}));
@@ -1186,11 +1199,11 @@ fn draw(app: &mut SlideApp, ui: &mut Ui) {
     });
     group(ui, |ui| {
         let r = big_button(ui, Icon::InkToShape, "Ink to\nShape", false);
-        let _ = r.on_hover_text("Ink to Shape (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Ink to Shape (coming soon)"));
         let r = big_button(ui, Icon::InkToText, "Ink to\nText", false);
-        let _ = r.on_hover_text("Ink to Text (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Ink to Text (coming soon)"));
         let r = big_button(ui, Icon::InkToMath, "Ink to\nMath", false);
-        let _ = r.on_hover_text("Ink to Math (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Ink to Math (coming soon)"));
     });
 }
 
@@ -1267,7 +1280,7 @@ fn design(app: &mut SlideApp, ui: &mut Ui) {
                     };
                     let (rect, resp) = ui.allocate_exact_size(vec2(48.0, 28.0), Sense::click());
                     ui.painter().rect(rect, CornerRadius::same(2), shade, Stroke::new(1.0, Tokens::get(ui.ctx()).border), egui::StrokeKind::Inside);
-                    if resp.on_hover_text(format!("Style {i}")).clicked() {
+                    if resp.on_hover_text(crate::i18n::format("Style {i}", &[(i).to_string()])).clicked() {
                         run(app, "design.background", json!({"style": i, "all": true}));
                         ui.close();
                     }
@@ -1276,7 +1289,7 @@ fn design(app: &mut SlideApp, ui: &mut Ui) {
                     }
                 }
             });
-            if ui.button("Reset Slide Background").clicked() {
+            if ui.button(crate::i18n::tr("Reset Slide Background")).clicked() {
                 run(app, "design.background", json!({"reset": true}));
             }
         });
@@ -1284,13 +1297,13 @@ fn design(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let r = big_button(ui, Icon::SlideSize, "Slide\nSize", true);
         egui::Popup::menu(&r).show(|ui| {
-            if ui.button("Standard (4:3)").clicked() {
+            if ui.button(crate::i18n::tr("Standard (4:3)")).clicked() {
                 run(app, "design.slideSize", json!({"preset": "standard"}));
             }
-            if ui.button("Widescreen (16:9)").clicked() {
+            if ui.button(crate::i18n::tr("Widescreen (16:9)")).clicked() {
                 run(app, "design.slideSize", json!({"preset": "widescreen"}));
             }
-            if ui.button("Page Setup…").clicked() {
+            if ui.button(crate::i18n::tr("Page Setup…")).clicked() {
                 app.dialog = Some(crate::dialogs::Dialog::new("slideSize"));
             }
         });
@@ -1305,7 +1318,7 @@ pub fn paint_theme_tile(p: &egui::Painter, r: Rect, th: &deckcraft_model::Theme)
     let bg = theme::to_color32(th.colors.get(deckcraft_color::SchemeSlot::Lt1));
     let fg = theme::to_color32(th.colors.get(deckcraft_color::SchemeSlot::Dk1));
     p.rect(r, CornerRadius::same(2), bg, Stroke::new(1.0, Color32::from_gray(200)), egui::StrokeKind::Inside);
-    p.text(r.min + vec2(8.0, r.height() * 0.42), Align2::LEFT_CENTER, "Aa", theme::font(r.height() * 0.38), fg);
+    p.text(r.min + vec2(8.0, r.height() * 0.42), Align2::LEFT_CENTER, crate::i18n::tr("Aa"), theme::font(r.height() * 0.38), fg);
     let w = (r.width() - 16.0) / 6.0;
     for k in 0..6 {
         let c = theme::to_color32(th.colors.colors.get(4 + k).copied().unwrap_or(deckcraft_color::Rgba::BLACK));
@@ -1345,7 +1358,7 @@ fn transitions(app: &mut SlideApp, ui: &mut Ui) {
         let more = widgets::drop_button(ui, "", vec2(14.0, 52.0), true);
         egui::Popup::menu(&more).width(480.0).show(|ui| {
             for cat in ["Subtle", "Exciting", "Dynamic Content"] {
-                ui.label(egui::RichText::new(cat).font(theme::bold(12.0)));
+                ui.label(egui::RichText::new(crate::i18n::tr(cat)).font(theme::bold(12.0)));
                 ui.horizontal_wrapped(|ui| {
                     for x in list.iter().filter(|x| x.2 == cat) {
                         let (r, resp) = ui.allocate_exact_size(vec2(56.0, 58.0), Sense::click());
@@ -1367,7 +1380,7 @@ fn transitions(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::EffectOptions, "Effect\nOptions", !opts.is_empty());
         egui::Popup::menu(&r).show(|ui| {
             for o in opts {
-                if ui.button(option_label(o)).clicked() {
+                if ui.button(crate::i18n::tr(&option_label(o))).clicked() {
                     run(app, "transition.options", json!({"option": o}));
                 }
             }
@@ -1376,7 +1389,7 @@ fn transitions(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         rows(ui, |ui| {
             ui.horizontal(|ui| {
-                ui.label("Duration:");
+                ui.label(crate::i18n::tr("Duration:"));
                 let d = cur.as_ref().map(|t| t.duration_ms as f64 / 1000.0).unwrap_or(1.0);
                 if let Some(v) = widgets::spinner(ui, "tdur", d, 0.25, "", 46.0) {
                     run(app, "transition.timing", json!({"duration": (v.max(0.0) * 1000.0).round() as u64}));
@@ -1384,14 +1397,14 @@ fn transitions(app: &mut SlideApp, ui: &mut Ui) {
             });
             ui.horizontal(|ui| {
                 let mut click = cur.as_ref().is_none_or(|t| t.advance_on_click);
-                if ui.checkbox(&mut click, "On Mouse Click").changed() {
+                if ui.checkbox(&mut click, crate::i18n::tr("On Mouse Click")).changed() {
                     run(app, "transition.timing", json!({"onClick": click}));
                 }
             });
             ui.horizontal(|ui| {
                 let after = cur.as_ref().and_then(|t| t.advance_after_ms);
                 let mut on = after.is_some();
-                if ui.checkbox(&mut on, "After:").changed() {
+                if ui.checkbox(&mut on, crate::i18n::tr("After:")).changed() {
                     run(app, "transition.timing", json!({"after": if on { json!(after.unwrap_or(0)) } else { Value::Null }}));
                 }
                 if let Some(v) = widgets::spinner(ui, "tafter", after.unwrap_or(0) as f64 / 1000.0, 1.0, "", 46.0) {
@@ -1403,12 +1416,17 @@ fn transitions(app: &mut SlideApp, ui: &mut Ui) {
     });
 }
 
-fn option_label(o: &str) -> String {
+pub(crate) fn option_label(o: &str) -> String {
     match o {
         "l" => "From Left".into(),
         "r" => "From Right".into(),
         "u" => "From Top".into(),
-        "d" => "From Bottom".into(),
+        "d" | "b" => "From Bottom".into(),
+        "t" => "From Top".into(),
+        "lb" | "ld" => "From Bottom Left".into(),
+        "rb" | "rd" => "From Bottom Right".into(),
+        "lt" | "lu" => "From Top Left".into(),
+        "rt" | "ru" => "From Top Right".into(),
         "horz" => "Horizontal".into(),
         "vert" => "Vertical".into(),
         "in" => "In".into(),
@@ -1495,7 +1513,7 @@ pub fn paint_transition_tile(p: &egui::Painter, r: Rect, (id, label): (&str, &st
         }
     }
     p.rect_stroke(pic, CornerRadius::same(2), Stroke::new(1.0, Color32::from_rgb(0x9B, 0xB4, 0xDB)), egui::StrokeKind::Inside);
-    p.text(pos2(r.center().x, r.max.y - 7.0), Align2::CENTER_CENTER, label, theme::font(10.0), t.text);
+    p.text(pos2(r.center().x, r.max.y - 7.0), Align2::CENTER_CENTER, crate::i18n::tr(label), theme::font(10.0), t.text);
 }
 
 // ---------- Animations ----------
@@ -1560,7 +1578,7 @@ fn animations(app: &mut SlideApp, ui: &mut Ui) {
             for (cls, label) in
                 [(AnimClass::Entrance, "Entrance"), (AnimClass::Emphasis, "Emphasis"), (AnimClass::Exit, "Exit"), (AnimClass::Path, "Motion Paths")]
             {
-                ui.label(egui::RichText::new(label).font(theme::bold(12.0)));
+                ui.label(egui::RichText::new(crate::i18n::tr(label)).font(theme::bold(12.0)));
                 ui.horizontal_wrapped(|ui| {
                     for a in deckcraft_model::anim::ANIMATIONS.iter().filter(|a| a.2 == cls) {
                         let (r, resp) = ui.allocate_exact_size(vec2(56.0, 54.0), Sense::click());
@@ -1580,13 +1598,13 @@ fn animations(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::EffectOptions, "Effect\nOptions", !opts.is_empty());
         egui::Popup::menu(&r).show(|ui| {
             for o in opts {
-                if ui.button(option_label(o)).clicked() {
+                if ui.button(crate::i18n::tr(&option_label(o))).clicked() {
                     run(app, "animation.options", json!({"option": o}));
                 }
             }
             ui.separator();
             for (l, b) in [("As One Object", "asOne"), ("By Paragraph", "byParagraph")] {
-                if ui.button(l).clicked() {
+                if ui.button(crate::i18n::tr(l)).clicked() {
                     run(app, "animation.options", json!({"textBuild": b}));
                 }
             }
@@ -1616,13 +1634,13 @@ fn animations(app: &mut SlideApp, ui: &mut Ui) {
         big(app, ui, Icon::AnimationPane, "Animation\nPane", "view.pane", json!({"pane": "animation"}));
         let r = big_button(ui, Icon::Trigger, "Trigger", cur.is_some());
         egui::Popup::menu(&r).show(|ui| {
-            if ui.button("On Click of… (none)").clicked() {
+            if ui.button(crate::i18n::tr("On Click of… (none)")).clicked() {
                 run(app, "animation.timing", json!({"trigger": null}));
             }
             let shapes: Vec<(u32, String)> =
                 app.session.active().map(|d| d.shapes().iter().map(|s| (s.id.0, s.name.clone())).collect()).unwrap_or_default();
             for (id, name) in shapes {
-                if ui.button(format!("On Click of {name}")).clicked() {
+                if ui.button(crate::i18n::format("On Click of {name}", std::slice::from_ref(&name))).clicked() {
                     run(app, "animation.timing", json!({"trigger": id}));
                 }
             }
@@ -1644,15 +1662,15 @@ fn animations(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         rows(ui, |ui| {
             ui.horizontal(|ui| {
-                ui.label("Start:");
+                ui.label(crate::i18n::tr("Start:"));
                 let s = cur.as_ref().map(|c| match c.start {
                     deckcraft_model::AnimStart::OnClick => "On Click",
                     deckcraft_model::AnimStart::WithPrevious => "With Previous",
                     deckcraft_model::AnimStart::AfterPrevious => "After Previous",
                 });
-                dropdown(ui, "astart", s.unwrap_or(""), 112.0, cur.is_some(), |ui| {
+                dropdown(ui, "astart", crate::i18n::tr(s.unwrap_or("")), 112.0, cur.is_some(), |ui| {
                     for (l, v) in [("On Click", "onClick"), ("With Previous", "withPrevious"), ("After Previous", "afterPrevious")] {
-                        if ui.button(l).clicked() {
+                        if ui.button(crate::i18n::tr(l)).clicked() {
                             run(app, "animation.timing", json!({"start": v}));
                             ui.close();
                         }
@@ -1660,13 +1678,13 @@ fn animations(app: &mut SlideApp, ui: &mut Ui) {
                 });
             });
             ui.horizontal(|ui| {
-                ui.label("Duration:");
+                ui.label(crate::i18n::tr("Duration:"));
                 if let Some(v) = widgets::spinner(ui, "adur", cur.as_ref().map(|c| c.duration_ms as f64 / 1000.0).unwrap_or(0.5), 0.25, "", 46.0) {
                     run(app, "animation.timing", json!({"duration": (v.max(0.0) * 1000.0).round() as u64}));
                 }
             });
             ui.horizontal(|ui| {
-                ui.label("Delay:");
+                ui.label(crate::i18n::tr("Delay:"));
                 if let Some(v) = widgets::spinner(ui, "adelay", cur.as_ref().map(|c| c.delay_ms as f64 / 1000.0).unwrap_or(0.0), 0.25, "", 46.0) {
                     run(app, "animation.timing", json!({"delay": (v.max(0.0) * 1000.0).round() as u64}));
                 }
@@ -1684,7 +1702,13 @@ pub fn paint_anim_tile(p: &egui::Painter, r: Rect, label: &str, class: AnimClass
         _ => Icon::AnimPath,
     };
     icons::paint(p, Rect::from_center_size(pos2(r.center().x, r.min.y + 18.0), vec2(28.0, 28.0)), icon, t.text, !enabled);
-    p.text(pos2(r.center().x, r.max.y - 8.0), Align2::CENTER_CENTER, label, theme::font(10.0), if enabled { t.text } else { t.text_faint });
+    p.text(
+        pos2(r.center().x, r.max.y - 8.0),
+        Align2::CENTER_CENTER,
+        crate::i18n::tr(label),
+        theme::font(10.0),
+        if enabled { t.text } else { t.text_faint },
+    );
 }
 
 // ---------- Slide Show / Record / Review / View ----------
@@ -1719,20 +1743,20 @@ fn slide_show(app: &mut SlideApp, ui: &mut Ui) {
             }
         }
         let r = big_button(ui, Icon::Record, "Record", false);
-        let _ = r.on_hover_text("Recording narration needs audio capture (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Recording narration needs audio capture (coming soon)"));
     });
     group(ui, |ui| {
         rows(ui, |ui| {
             let mut use_t = app.session.active().is_none_or(|d| d.doc.show.use_timings);
-            if ui.checkbox(&mut use_t, "Use Timings").changed() {
+            if ui.checkbox(&mut use_t, crate::i18n::tr("Use Timings")).changed() {
                 run(app, "show.setup", json!({"useTimings": use_t}));
             }
             let mut narr = app.session.active().is_none_or(|d| !d.doc.show.without_narration);
-            if ui.checkbox(&mut narr, "Play Narrations").changed() {
+            if ui.checkbox(&mut narr, crate::i18n::tr("Play Narrations")).changed() {
                 run(app, "show.setup", json!({"noNarration": !narr}));
             }
             let mut mc = app.session.active().is_none_or(|d| d.doc.show.show_media_controls);
-            let _ = ui.checkbox(&mut mc, "Show Media Controls");
+            let _ = ui.checkbox(&mut mc, crate::i18n::tr("Show Media Controls"));
         });
     });
 }
@@ -1740,7 +1764,7 @@ fn slide_show(app: &mut SlideApp, ui: &mut Ui) {
 fn record(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let r = big_button(ui, Icon::Cameo, "Cameo", false);
-        let _ = r.on_hover_text("Camera capture is not available yet");
+        let _ = r.on_hover_text(crate::i18n::tr("Camera capture is not available yet"));
         if big_button(ui, Icon::PlayFromStart, "From\nBeginning", true).clicked() {
             app.start_show(0, false);
             if let Some(s) = app.show.as_mut() {
@@ -1766,14 +1790,14 @@ fn review(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         big(app, ui, Icon::Spelling, "Spelling", "app.dialog", json!({"id": "spelling"}));
         let r = big_button(ui, Icon::Thesaurus, "Thesaurus", false);
-        let _ = r.on_hover_text("Thesaurus (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Thesaurus (coming soon)"));
     });
     group(ui, |ui| {
         big(app, ui, Icon::Accessibility, "Check\nAccessibility", "app.dialog", json!({"id": "accessibility"}));
     });
     group(ui, |ui| {
         let r = big_button(ui, Icon::Translate, "Translate", false);
-        let _ = r.on_hover_text("Translation needs a language model (not bundled)");
+        let _ = r.on_hover_text(crate::i18n::tr("Translation needs a language model (not bundled)"));
         big(app, ui, Icon::Language, "Language", "app.dialog", json!({"id": "language"}));
     });
     group(ui, |ui| {
@@ -1808,22 +1832,22 @@ fn view(app: &mut SlideApp, ui: &mut Ui) {
             let _ = app.run(if in_master { "view.closeMaster" } else { "view.slideMaster" }, json!({}));
         }
         let r = big_button(ui, Icon::HandoutMaster, "Handout\nMaster", false);
-        let _ = r.on_hover_text("Handout Master (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Handout Master (coming soon)"));
         let r = big_button(ui, Icon::NotesMaster, "Notes\nMaster", false);
-        let _ = r.on_hover_text("Notes Master (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Notes Master (coming soon)"));
     });
     group(ui, |ui| {
         rows(ui, |ui| {
             let mut r = app.ui.ruler;
-            if ui.checkbox(&mut r, "Ruler").changed() {
+            if ui.checkbox(&mut r, crate::i18n::tr("Ruler")).changed() {
                 app.ui.ruler = r;
             }
             let mut g = app.ui.gridlines;
-            if ui.checkbox(&mut g, "Gridlines").changed() {
+            if ui.checkbox(&mut g, crate::i18n::tr("Gridlines")).changed() {
                 app.ui.gridlines = g;
             }
             let mut gd = app.ui.guides;
-            if ui.checkbox(&mut gd, "Guides").changed() {
+            if ui.checkbox(&mut gd, crate::i18n::tr("Guides")).changed() {
                 app.ui.guides = gd;
             }
         });
@@ -1872,16 +1896,16 @@ fn shape_format(app: &mut SlideApp, ui: &mut Ui) {
         big(app, ui, Icon::TextBox, "Text\nBox", "insert.textBox", json!({}));
         let r = big_button(ui, Icon::EditShape, "Edit\nShape", sel);
         egui::Popup::menu(&r).show(|ui| {
-            ui.label("Change Shape");
+            ui.label(crate::i18n::tr("Change Shape"));
             if let Some(p) = shapes_gallery(ui) {
                 run(app, "shape.change", json!({"preset": p}));
             }
         });
         let can_merge = enabled(app, "shape.merge");
-        let r = big_button(ui, Icon::MergeShapes, "Merge\nShapes", can_merge).on_hover_text("Merge Shapes");
+        let r = big_button(ui, Icon::MergeShapes, "Merge\nShapes", can_merge).on_hover_text(crate::i18n::tr("Merge Shapes"));
         egui::Popup::menu(&r).show(|ui| {
             for (op, label) in deckcraft_engine::cmd::merge::OPS {
-                if ui.button(label).clicked() {
+                if ui.button(crate::i18n::tr(label)).clicked() {
                     run(app, "shape.merge", json!({"op": op}));
                     ui.close();
                 }
@@ -1904,7 +1928,7 @@ fn shape_format(app: &mut SlideApp, ui: &mut Ui) {
                             None => run(app, "shape.fill", json!({"none": true})),
                         }
                     }
-                    if ui.button("Gradient…").clicked() {
+                    if ui.button(crate::i18n::tr("Gradient…")).clicked() {
                         let _ = app.run("view.pane", json!({"pane": "format", "tab": "fill"}));
                         ui.close();
                     }
@@ -1940,7 +1964,7 @@ fn shape_format(app: &mut SlideApp, ui: &mut Ui) {
             }
             let r = small_button(ui, Icon::TextEffects, "Text Effects", sel, false);
             egui::Popup::menu(&r).show(|ui| {
-                if ui.button("Shadow").clicked() {
+                if ui.button(crate::i18n::tr("Shadow")).clicked() {
                     run(app, "format.textShadow", json!({}));
                 }
             });
@@ -2012,18 +2036,18 @@ fn size_group(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         rows(ui, |ui| {
             let Some(x) = bx else {
-                ui.label("Height:");
-                ui.label("Width:");
+                ui.label(crate::i18n::tr("Height:"));
+                ui.label(crate::i18n::tr("Width:"));
                 return;
             };
             ui.horizontal(|ui| {
-                ui.label("Height:");
+                ui.label(crate::i18n::tr("Height:"));
                 if let Some(v) = widgets::spinner(ui, "sh", x.h / 72.0, 0.1, "\"", 54.0) {
                     run(app, "shape.resize", json!({"h": v.max(0.0) * 72.0}));
                 }
             });
             ui.horizontal(|ui| {
-                ui.label("Width: ");
+                ui.label(crate::i18n::tr("Width: "));
                 if let Some(v) = widgets::spinner(ui, "sw", x.w / 72.0, 0.1, "\"", 54.0) {
                     run(app, "shape.resize", json!({"w": v.max(0.0) * 72.0}));
                 }
@@ -2035,17 +2059,17 @@ fn size_group(app: &mut SlideApp, ui: &mut Ui) {
 fn picture_format(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let r = big_button(ui, Icon::RemoveBackground, "Remove\nBackground", false);
-        let _ = r.on_hover_text("Remove Background (coming soon)");
+        let _ = r.on_hover_text(crate::i18n::tr("Remove Background (coming soon)"));
         let r = big_button(ui, Icon::Corrections, "Corrections", true);
         egui::Popup::menu(&r).show(|ui| {
             for b in [-0.4, -0.2, 0.0, 0.2, 0.4] {
-                if ui.button(format!("Brightness {:+}%", (b * 100.0) as i32)).clicked() {
+                if ui.button(crate::i18n::format("Brightness {:+}%", &[format!("{:+}", (b * 100.0) as i32)])).clicked() {
                     run(app, "picture.adjust", json!({"brightness": b}));
                 }
             }
             ui.separator();
             for c in [-0.4, -0.2, 0.0, 0.2, 0.4] {
-                if ui.button(format!("Contrast {:+}%", (c * 100.0) as i32)).clicked() {
+                if ui.button(crate::i18n::format("Contrast {:+}%", &[format!("{:+}", (c * 100.0) as i32)])).clicked() {
                     run(app, "picture.adjust", json!({"contrast": c}));
                 }
             }
@@ -2053,11 +2077,11 @@ fn picture_format(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::ColorAdjust, "Color", true);
         egui::Popup::menu(&r).show(|ui| {
             for s in [0.0, 0.33, 0.66, 1.0, 1.5, 2.0, 3.0] {
-                if ui.button(format!("Saturation {}%", (s * 100.0) as i32)).clicked() {
+                if ui.button(crate::i18n::format("Saturation {}%", &[((s * 100.0) as i32).to_string()])).clicked() {
                     run(app, "picture.adjust", json!({"saturation": s}));
                 }
             }
-            if ui.button("Grayscale").clicked() {
+            if ui.button(crate::i18n::tr("Grayscale")).clicked() {
                 run(app, "picture.adjust", json!({"grayscale": true}));
             }
         });
@@ -2077,24 +2101,24 @@ fn picture_format(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let r = big_button(ui, Icon::QuickStyles, "Picture\nStyles", true);
         egui::Popup::menu(&r).show(|ui| {
-            if ui.button("Simple Frame, White").clicked() {
+            if ui.button(crate::i18n::tr("Simple Frame, White")).clicked() {
                 run(app, "shape.line", json!({"color": "#FFFFFF", "width": 6}));
                 run(app, "shape.effects", json!({"shadow": "outer"}));
             }
-            if ui.button("Drop Shadow Rectangle").clicked() {
+            if ui.button(crate::i18n::tr("Drop Shadow Rectangle")).clicked() {
                 run(app, "shape.effects", json!({"shadow": "bottom"}));
             }
-            if ui.button("Rounded Diagonal Corner").clicked() {
+            if ui.button(crate::i18n::tr("Rounded Diagonal Corner")).clicked() {
                 run(app, "shape.change", json!({"preset": "round2DiagRect"}));
             }
-            if ui.button("Soft Edge Rectangle").clicked() {
+            if ui.button(crate::i18n::tr("Soft Edge Rectangle")).clicked() {
                 run(app, "shape.effects", json!({"softEdges": 10}));
             }
-            if ui.button("Reflected Rounded Rectangle").clicked() {
+            if ui.button(crate::i18n::tr("Reflected Rounded Rectangle")).clicked() {
                 run(app, "shape.change", json!({"preset": "roundRect"}));
                 run(app, "shape.effects", json!({"reflection": "half"}));
             }
-            if ui.button("Oval").clicked() {
+            if ui.button(crate::i18n::tr("Oval")).clicked() {
                 run(app, "shape.change", json!({"preset": "ellipse"}));
             }
         });
@@ -2104,13 +2128,13 @@ fn picture_format(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         let r = big_button(ui, Icon::Crop, "Crop", true);
         egui::Popup::menu(&r).show(|ui| {
-            ui.label("Crop to Shape");
+            ui.label(crate::i18n::tr("Crop to Shape"));
             if let Some(p) = shapes_gallery(ui) {
                 run(app, "shape.change", json!({"preset": p}));
             }
             ui.separator();
             for (l, v) in [("Crop 10% each side", 0.1), ("Crop 20% each side", 0.2), ("Reset Crop", 0.0)] {
-                if ui.button(l).clicked() {
+                if ui.button(crate::i18n::tr(l)).clicked() {
                     run(app, "picture.crop", json!({"left": v, "top": v, "right": v, "bottom": v}));
                 }
             }
@@ -2129,31 +2153,31 @@ fn table_design(app: &mut SlideApp, ui: &mut Ui) {
             let flags = tbl.as_ref().map(|t| (t.first_row, t.last_row, t.band_row, t.first_col, t.last_col, t.band_col)).unwrap_or_default();
             ui.horizontal(|ui| {
                 let mut a = flags.0;
-                if ui.checkbox(&mut a, "Header Row").changed() {
+                if ui.checkbox(&mut a, crate::i18n::tr("Header Row")).changed() {
                     run(app, "table.options", json!({"headerRow": a}));
                 }
                 let mut d = flags.3;
-                if ui.checkbox(&mut d, "First Column").changed() {
+                if ui.checkbox(&mut d, crate::i18n::tr("First Column")).changed() {
                     run(app, "table.options", json!({"firstColumn": d}));
                 }
             });
             ui.horizontal(|ui| {
                 let mut b = flags.1;
-                if ui.checkbox(&mut b, "Total Row").changed() {
+                if ui.checkbox(&mut b, crate::i18n::tr("Total Row")).changed() {
                     run(app, "table.options", json!({"totalRow": b}));
                 }
                 let mut e = flags.4;
-                if ui.checkbox(&mut e, "Last Column").changed() {
+                if ui.checkbox(&mut e, crate::i18n::tr("Last Column")).changed() {
                     run(app, "table.options", json!({"lastColumn": e}));
                 }
             });
             ui.horizontal(|ui| {
                 let mut c = flags.2;
-                if ui.checkbox(&mut c, "Banded Rows").changed() {
+                if ui.checkbox(&mut c, crate::i18n::tr("Banded Rows")).changed() {
                     run(app, "table.options", json!({"bandedRows": c}));
                 }
                 let mut f = flags.5;
-                if ui.checkbox(&mut f, "Banded Columns").changed() {
+                if ui.checkbox(&mut f, crate::i18n::tr("Banded Columns")).changed() {
                     run(app, "table.options", json!({"bandedColumns": f}));
                 }
             });
@@ -2186,7 +2210,7 @@ fn table_design(app: &mut SlideApp, ui: &mut Ui) {
                 for (id, label) in &styles {
                     let (r, resp) = ui.allocate_exact_size(vec2(48.0, 36.0), Sense::click());
                     paint_table_style(ui.painter(), r.shrink(2.0), id, &sc);
-                    if resp.on_hover_text(label).clicked() {
+                    if resp.on_hover_text(crate::i18n::tr(label)).clicked() {
                         run(app, "table.style", json!({"style": id}));
                         ui.close();
                     }
@@ -2275,7 +2299,7 @@ fn table_layout(app: &mut SlideApp, ui: &mut Ui) {
             });
             ui.horizontal(|ui| {
                 for (l, a) in [("Top", "top"), ("Center", "middle"), ("Bottom", "bottom")] {
-                    if ui.small_button(l).clicked() {
+                    if ui.small_button(crate::i18n::tr(l)).clicked() {
                         run(app, "format.anchor", json!({"anchor": a}));
                     }
                 }
@@ -2290,7 +2314,7 @@ fn chart_design(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::ChangeChartType, "Change\nChart Type", true);
         egui::Popup::menu(&r).show(|ui| {
             for k in deckcraft_model::chart::ChartType::MAIN {
-                if ui.button(k.label()).clicked() {
+                if ui.button(crate::i18n::tr(k.label())).clicked() {
                     // Replace the chart's type keeping its data.
                     if let Some(id) = app.session.active().and_then(|d| d.selection.shapes.first().copied()) {
                         let _ = app.run("chart.type", json!({"id": id.0, "type": format!("{k:?}")}));
@@ -2318,29 +2342,29 @@ fn playback(app: &mut SlideApp, ui: &mut Ui) {
     group(ui, |ui| {
         rows(ui, |ui| {
             let mut auto = m.as_ref().is_some_and(|x| x.autoplay);
-            if ui.checkbox(&mut auto, "Start Automatically").changed() {
+            if ui.checkbox(&mut auto, crate::i18n::tr("Start Automatically")).changed() {
                 run(app, "media.options", json!({"autoplay": auto}));
             }
             let mut across = m.as_ref().is_some_and(|x| x.play_across_slides);
-            if ui.checkbox(&mut across, "Play Across Slides").changed() {
+            if ui.checkbox(&mut across, crate::i18n::tr("Play Across Slides")).changed() {
                 run(app, "media.options", json!({"acrossSlides": across}));
             }
             let mut lp = m.as_ref().is_some_and(|x| x.loop_play);
-            if ui.checkbox(&mut lp, "Loop until Stopped").changed() {
+            if ui.checkbox(&mut lp, crate::i18n::tr("Loop until Stopped")).changed() {
                 run(app, "media.options", json!({"loop": lp}));
             }
         });
         rows(ui, |ui| {
             let mut hide = m.as_ref().is_some_and(|x| x.hide_while_not_playing);
-            if ui.checkbox(&mut hide, "Hide During Show").changed() {
+            if ui.checkbox(&mut hide, crate::i18n::tr("Hide During Show")).changed() {
                 run(app, "media.options", json!({"hide": hide}));
             }
             let mut rw = m.as_ref().is_some_and(|x| x.rewind);
-            if ui.checkbox(&mut rw, "Rewind after Playing").changed() {
+            if ui.checkbox(&mut rw, crate::i18n::tr("Rewind after Playing")).changed() {
                 run(app, "media.options", json!({"rewind": rw}));
             }
             let mut fs = m.as_ref().is_some_and(|x| x.full_screen);
-            if ui.checkbox(&mut fs, "Play Full Screen").changed() {
+            if ui.checkbox(&mut fs, crate::i18n::tr("Play Full Screen")).changed() {
                 run(app, "media.options", json!({"fullScreen": fs}));
             }
         });
@@ -2349,7 +2373,7 @@ fn playback(app: &mut SlideApp, ui: &mut Ui) {
         let r = big_button(ui, Icon::Volume, "Volume", m.is_some());
         egui::Popup::menu(&r).show(|ui| {
             for (l, v) in [("Low", 0.25), ("Medium", 0.5), ("High", 1.0), ("Mute", 0.0)] {
-                if ui.button(l).clicked() {
+                if ui.button(crate::i18n::tr(l)).clicked() {
                     run(app, "media.options", json!({"volume": v}));
                 }
             }
@@ -2369,7 +2393,7 @@ fn slide_master(app: &mut SlideApp, ui: &mut Ui) {
             for (l, k) in
                 [("Content", "content"), ("Text", "text"), ("Picture", "picture"), ("Chart", "chart"), ("Table", "table"), ("Media", "media")]
             {
-                if ui.button(l).clicked() {
+                if ui.button(crate::i18n::tr(l)).clicked() {
                     run(app, "master.insertPlaceholder", json!({"kind": k}));
                 }
             }
diff --git a/crates/ui-egui/src/show.rs b/crates/ui-egui/src/show.rs
index 1c8e6e1eb..302b92569 100644
--- a/crates/ui-egui/src/show.rs
+++ b/crates/ui-egui/src/show.rs
@@ -365,7 +365,7 @@ pub fn ui(app: &mut SlideApp, ui: &mut Ui) {
         painter.text(
             pos2(full.center().x, full.min.y + 40.0),
             Align2::CENTER_CENTER,
-            "End of slide show, click to exit.",
+            crate::i18n::tr("End of slide show, click to exit."),
             theme::font(18.0),
             Color32::from_gray(200),
         );
@@ -555,7 +555,7 @@ pub fn ui(app: &mut SlideApp, ui: &mut Ui) {
         painter.text(
             pos2(bar.min.x + 14.0, bar.center().y),
             Align2::LEFT_CENTER,
-            format!("Slide {} of {}", show.state.slide + 1, doc.slides.len()),
+            crate::i18n::format("Slide {} of {}", &[(show.state.slide + 1).to_string(), (doc.slides.len()).to_string()]),
             theme::font(12.0),
             Color32::from_gray(200),
         );
@@ -564,7 +564,7 @@ pub fn ui(app: &mut SlideApp, ui: &mut Ui) {
                 .max_rect(Rect::from_min_max(pos2(bar.max.x - 260.0, bar.min.y), bar.max))
                 .layout(egui::Layout::right_to_left(egui::Align::Center)),
         );
-        if child.button("Close").clicked() {
+        if child.button(crate::i18n::tr("Close")).clicked() {
             keep = false;
         }
         if child.button("▶").clicked() {
@@ -612,7 +612,15 @@ pub fn ui(app: &mut SlideApp, ui: &mut Ui) {
         painter.text(
             r.center(),
             Align2::CENTER_CENTER,
-            format!("Slide {:02}:{:04.1}   Total {:02}:{:02}", (t / 60.0) as u32, t % 60.0, (total / 60.0) as u32, (total % 60.0) as u32),
+            crate::i18n::format(
+                "Slide {:02}:{:04.1}   Total {:02}:{:02}",
+                &[
+                    format!("{:02}", (t / 60.0) as u32),
+                    format!("{:04.1}", t % 60.0),
+                    format!("{:02}", (total / 60.0) as u32),
+                    format!("{:02}", (total % 60.0) as u32),
+                ],
+            ),
             theme::font(13.0),
             Color32::WHITE,
         );
@@ -750,7 +758,7 @@ fn presenter_window(ctx: &egui::Context, show: &mut Show, doc: &Presentation, no
     let mut actions = vec![];
     ctx.show_viewport_immediate(
         egui::ViewportId::from_hash_of("deckcraft_presenter"),
-        egui::ViewportBuilder::default().with_title("Presenter View — DeckCraft").with_inner_size([1100.0, 700.0]),
+        egui::ViewportBuilder::default().with_title(crate::i18n::tr("Presenter View — DeckCraft")).with_inner_size([1100.0, 700.0]),
         |ui, _| {
             egui::CentralPanel::default().frame(egui::Frame::NONE.fill(Color32::from_gray(24)).inner_margin(egui::Margin::same(16))).show(ui, |ui| {
                 ui.horizontal(|ui| {
@@ -765,15 +773,19 @@ fn presenter_window(ctx: &egui::Context, show: &mut Show, doc: &Presentation, no
                         .color(Color32::WHITE),
                     );
                     ui.add_space(20.0);
-                    ui.label(egui::RichText::new(format!("Slide {} of {}", cur + 1, doc.slides.len())).size(16.0).color(Color32::from_gray(200)));
+                    ui.label(
+                        egui::RichText::new(crate::i18n::format("Slide {} of {}", &[(cur + 1).to_string(), (doc.slides.len()).to_string()]))
+                            .size(16.0)
+                            .color(Color32::from_gray(200)),
+                    );
                     ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
-                        if ui.button("End Show").clicked() {
+                        if ui.button(crate::i18n::tr("End Show")).clicked() {
                             *keep = false;
                         }
-                        if ui.button("Next ▶").clicked() {
+                        if ui.button(crate::i18n::tr("Next ▶")).clicked() {
                             actions.push(show.state.next(doc));
                         }
-                        if ui.button("◀ Previous").clicked() {
+                        if ui.button(crate::i18n::tr("◀ Previous")).clicked() {
                             actions.push(show.state.prev(doc));
                         }
                     });
@@ -791,14 +803,20 @@ fn presenter_window(ctx: &egui::Context, show: &mut Show, doc: &Presentation, no
                     right.min + vec2(0.0, 22.0),
                     vec2(right.width(), right.width() * (doc.slide_size.height / doc.slide_size.width.max(1.0)) as f32),
                 );
-                ui.painter().text(right.min, Align2::LEFT_TOP, "Next", theme::font(13.0), Color32::from_gray(170));
+                ui.painter().text(right.min, Align2::LEFT_TOP, crate::i18n::tr("Next"), theme::font(13.0), Color32::from_gray(170));
                 match &next_tex {
                     Some(t) => {
                         ui.painter().image(t.id(), nr, Rect::from_min_max(pos2(0.0, 0.0), pos2(1.0, 1.0)), Color32::WHITE);
                     }
                     None => {
                         ui.painter().rect_filled(nr, CornerRadius::ZERO, Color32::from_gray(40));
-                        ui.painter().text(nr.center(), Align2::CENTER_CENTER, "End of slide show", theme::font(13.0), Color32::from_gray(170));
+                        ui.painter().text(
+                            nr.center(),
+                            Align2::CENTER_CENTER,
+                            crate::i18n::tr("End of slide show"),
+                            theme::font(13.0),
+                            Color32::from_gray(170),
+                        );
                     }
                 }
                 let notes_rect = Rect::from_min_max(pos2(right.min.x, nr.max.y + 16.0), right.max);
diff --git a/crates/ui-egui/src/sorter.rs b/crates/ui-egui/src/sorter.rs
index dd26dd851..0d5c975ff 100644
--- a/crates/ui-egui/src/sorter.rs
+++ b/crates/ui-egui/src/sorter.rs
@@ -52,7 +52,7 @@ pub fn show(app: &mut SlideApp, ui: &mut Ui) {
                         Stroke::new(if selected { 3.0 } else { 1.0 }, if selected { t.accent } else { t.border }),
                         egui::StrokeKind::Outside,
                     );
-                    p.text(pos2(img.min.x, img.max.y + 12.0), Align2::LEFT_CENTER, format!("{}", i + 1), theme::font(12.0), t.text_dim);
+                    p.text(pos2(img.min.x, img.max.y + 12.0), Align2::LEFT_CENTER, (i + 1).to_string(), theme::font(12.0), t.text_dim);
                     if let Some(tr) = doc.slides.get(i).and_then(|s| s.transition.as_ref()).filter(|t| t.kind != "none") {
                         p.text(pos2(img.max.x, img.max.y + 12.0), Align2::RIGHT_CENTER, format!("★ {}", tr.kind), theme::font(10.5), t.text_faint);
                     }
@@ -137,7 +137,7 @@ pub fn notes_page(app: &mut SlideApp, ui: &mut Ui) {
     let mut buf: String = child.data_mut(|d| d.get_temp(id).unwrap_or_else(|| current.clone()));
     let r = child.add(
         egui::TextEdit::multiline(&mut buf)
-            .hint_text("Click to add text")
+            .hint_text(crate::i18n::tr("Click to add text"))
             .desired_width(notes_rect.width())
             .desired_rows(12)
             .frame(egui::Frame::NONE)
@@ -170,7 +170,7 @@ pub fn outline_pane(app: &mut SlideApp, ui: &mut Ui) {
                 for (i, s) in doc.slides.iter().enumerate() {
                     let title_shape = s.shapes.iter().find(|x| x.ph_type().is_some_and(|k| k.is_title())).map(|x| x.id.0);
                     ui.horizontal(|ui| {
-                        ui.label(egui::RichText::new(format!("{}", i + 1)).color(t.text_dim));
+                        ui.label(egui::RichText::new((i + 1).to_string()).color(t.text_dim));
                         let (r, _) = ui.allocate_exact_size(vec2(14.0, 10.0), Sense::hover());
                         ui.painter().rect_stroke(
                             r,
diff --git a/crates/ui-egui/src/status.rs b/crates/ui-egui/src/status.rs
index a6f4eb11d..262af45f0 100644
--- a/crates/ui-egui/src/status.rs
+++ b/crates/ui-egui/src/status.rs
@@ -15,12 +15,20 @@ pub fn status_bar(app: &mut SlideApp, ui: &mut Ui) {
         let Some(st) = app.session.active() else { return };
         let n = st.doc.slides.len();
         let left = match st.selection.target {
-            deckcraft_engine::Target::Slides => format!("Slide {} of {}", (st.selection.slide + 1).min(n.max(1)), n),
-            _ => "Slide Master".to_string(),
+            deckcraft_engine::Target::Slides => {
+                crate::i18n::format("Slide {} of {}", &[((st.selection.slide + 1).min(n.max(1))).to_string(), (n).to_string()])
+            }
+            _ => crate::i18n::tr("Slide Master").to_string(),
         };
         let p = ui.painter();
         p.text(pos2(rect.min.x + 14.0, rect.center().y), Align2::LEFT_CENTER, &left, theme::font(12.0), t.text_dim);
-        p.text(pos2(rect.min.x + 120.0, rect.center().y), Align2::LEFT_CENTER, "English (United States)", theme::font(12.0), t.text_dim);
+        p.text(
+            pos2(rect.min.x + 120.0, rect.center().y),
+            Align2::LEFT_CENTER,
+            crate::i18n::tr("English (United States)"),
+            theme::font(12.0),
+            t.text_dim,
+        );
         // Transient status message.
         if let Some((msg, at)) = app.status.clone() {
             if crate::now_ms() - at < 6000.0 {
@@ -93,10 +101,11 @@ fn small_icon(ui: &mut Ui, icon: Icon, tip: &str, on: bool) -> egui::Response {
         ui.painter().rect_filled(r, CornerRadius::same(4), if on { t.selected } else { t.hover });
     }
     icons::paint(ui.painter(), Rect::from_center_size(r.center(), vec2(16.0, 16.0)), icon, t.text_dim, false);
-    resp.on_hover_text(tip)
+    resp.on_hover_text(crate::i18n::tr(tip))
 }
 
 fn labeled(ui: &mut Ui, icon: Icon, label: &str, on: bool) -> egui::Response {
+    let label = crate::i18n::tr(label);
     let t = Tokens::get(ui.ctx());
     let w = 22.0 + ui.fonts_mut(|f| f.layout_no_wrap(label.into(), theme::font(12.0), t.text).size().x) + 8.0;
     let (r, resp) = ui.allocate_exact_size(vec2(w, 20.0), Sense::click());
@@ -104,7 +113,7 @@ fn labeled(ui: &mut Ui, icon: Icon, label: &str, on: bool) -> egui::Response {
         ui.painter().rect_filled(r, CornerRadius::same(4), if on { t.selected } else { t.hover });
     }
     icons::paint(ui.painter(), Rect::from_center_size(pos2(r.min.x + 11.0, r.center().y), vec2(15.0, 15.0)), icon, t.text_dim, false);
-    ui.painter().text(pos2(r.min.x + 22.0, r.center().y), Align2::LEFT_CENTER, label, theme::font(12.0), t.text_dim);
+    ui.painter().text(pos2(r.min.x + 22.0, r.center().y), Align2::LEFT_CENTER, crate::i18n::tr(label), theme::font(12.0), t.text_dim);
     resp
 }
 
@@ -141,7 +150,7 @@ pub fn notes_pane(app: &mut SlideApp, ui: &mut Ui) {
             let r = ui.add(
                 egui::TextEdit::multiline(&mut buf)
                     .id(id)
-                    .hint_text("Click to add notes")
+                    .hint_text(crate::i18n::tr("Click to add notes"))
                     .frame(egui::Frame::NONE)
                     .desired_width(f32::INFINITY)
                     .desired_rows(2)
diff --git a/crates/ui-egui/src/textures.rs b/crates/ui-egui/src/textures.rs
index 84cf27554..f90cd2b5f 100644
--- a/crates/ui-egui/src/textures.rs
+++ b/crates/ui-egui/src/textures.rs
@@ -14,6 +14,7 @@ struct Key {
     master: usize,
     size: (u32, u32),
     edit: bool,
+    language: crate::i18n::Language,
     extra: u64,
 }
 
@@ -79,6 +80,7 @@ impl Textures {
             master: master.as_ref().map(|m| Arc::as_ptr(m) as usize).unwrap_or(0),
             size,
             edit,
+            language: if edit { crate::i18n::current() } else { crate::i18n::Language::En },
             extra: extra ^ grayscale as u64,
         };
         if let Some(e) = &self.canvas
@@ -88,7 +90,15 @@ impl Textures {
         }
         let t0 = crate::now_ms();
         let scale = size.0 as f64 / p.slide_size.width.max(1.0);
-        let opts = RenderOpts { scale, edit, gif_times, threads: threads(), size: Some(size), ..Default::default() };
+        let opts = RenderOpts {
+            scale,
+            edit,
+            gif_times,
+            placeholder_prompt: Some(crate::i18n::placeholder_prompt),
+            threads: threads(),
+            size: Some(size),
+            ..Default::default()
+        };
         let img = deckcraft_render::render_slide(p, index, &opts);
         self.last_render_ms = crate::now_ms() - t0;
         let ci = to_color_image(&img, grayscale);
@@ -120,6 +130,7 @@ impl Textures {
             master: master.as_ref().map(|m| Arc::as_ptr(m) as usize).unwrap_or(0),
             size: (width_px, h),
             edit: false,
+            language: crate::i18n::Language::En,
             extra: 0,
         };
         self.clock += 1;
@@ -150,3 +161,48 @@ impl Textures {
         Some(tex)
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn switching_interface_language_refreshes_cached_hints_and_preserves_user_content() {
+        fn updated_canvas(ctx: &egui::Context, textures: &mut Textures, p: &Presentation, language: crate::i18n::Language) -> egui::ImageData {
+            crate::i18n::set_current(language);
+            let tex = textures.slide(ctx, p, 0, (480, 270), true, 0, false, &[]).unwrap();
+            let mut delta = ctx.tex_manager().write().take_delta();
+            let image = delta.set.get(&tex.id()).and_then(|images| images.last()).map(|image| image.image.clone());
+            delta.clear();
+            image.expect("the changed interface language must update the canvas texture")
+        }
+
+        let ctx = egui::Context::default();
+        let mut textures = Textures::default();
+        let mut p = Presentation::default();
+        let before = p.clone();
+        let english = updated_canvas(&ctx, &mut textures, &p, crate::i18n::Language::En);
+        let ukrainian = updated_canvas(&ctx, &mut textures, &p, crate::i18n::Language::Uk);
+        assert!(english != ukrainian, "the default placeholder hints must change visibly");
+        assert_eq!(p, before);
+
+        for master in &mut p.masters {
+            for layout in &mut Arc::make_mut(master).layouts {
+                for shape in &mut layout.shapes {
+                    if let Some(ph) = &mut shape.ph {
+                        ph.has_custom_prompt = true;
+                        shape.text = Some(deckcraft_model::TextBody::from_text("Custom {project} prompt"));
+                    }
+                }
+            }
+        }
+        Arc::make_mut(p.slides.first_mut().unwrap()).shapes.first_mut().unwrap().text =
+            Some(deckcraft_model::TextBody::from_text("User File {project}"));
+        let before = p.clone();
+        let english = updated_canvas(&ctx, &mut textures, &p, crate::i18n::Language::En);
+        let ukrainian = updated_canvas(&ctx, &mut textures, &p, crate::i18n::Language::Uk);
+        assert!(english == ukrainian, "stored text and custom prompts must retain their original wording");
+        assert_eq!(p, before);
+        crate::i18n::set_current(crate::i18n::Language::En);
+    }
+}
diff --git a/crates/ui-egui/src/thumbs.rs b/crates/ui-egui/src/thumbs.rs
index ebdc81d0b..285b04347 100644
--- a/crates/ui-egui/src/thumbs.rs
+++ b/crates/ui-egui/src/thumbs.rs
@@ -61,25 +61,25 @@ fn list(app: &mut SlideApp, ui: &mut Ui) {
                 t.text_dim,
             );
             resp.context_menu(|ui| {
-                if ui.button("Rename Section…").clicked() {
+                if ui.button(crate::i18n::tr("Rename Section…")).clicked() {
                     let mut d = crate::dialogs::Dialog::new("renameSection");
                     d.params = json!({"index": si, "name": sec.name});
                     app.dialog = Some(d);
                     ui.close();
                 }
-                if ui.button("Remove Section").clicked() {
+                if ui.button(crate::i18n::tr("Remove Section")).clicked() {
                     let _ = app.run("section.remove", json!({"index": si}));
                     ui.close();
                 }
-                if ui.button("Remove Section & Slides").clicked() {
+                if ui.button(crate::i18n::tr("Remove Section & Slides")).clicked() {
                     let _ = app.run("section.remove", json!({"index": si, "slides": true}));
                     ui.close();
                 }
-                if ui.button("Move Section Up").clicked() {
+                if ui.button(crate::i18n::tr("Move Section Up")).clicked() {
                     let _ = app.run("section.move", json!({"index": si, "to": si.saturating_sub(1)}));
                     ui.close();
                 }
-                if ui.button("Move Section Down").clicked() {
+                if ui.button(crate::i18n::tr("Move Section Down")).clicked() {
                     let _ = app.run("section.move", json!({"index": si, "to": si + 1}));
                     ui.close();
                 }
@@ -95,7 +95,7 @@ fn list(app: &mut SlideApp, ui: &mut Ui) {
         p.text(
             pos2(row.min.x + 14.0, img.min.y + 2.0),
             Align2::CENTER_TOP,
-            format!("{}", i + 1),
+            (i + 1).to_string(),
             theme::font(12.0),
             if selected { t.text } else { t.text_dim },
         );
@@ -186,7 +186,7 @@ fn list(app: &mut SlideApp, ui: &mut Ui) {
     // Click on empty space below: new slide prompt.
     let (r, resp) = ui.allocate_exact_size(vec2(width, 40.0), Sense::click());
     if resp.hovered() {
-        ui.painter().text(r.center(), Align2::CENTER_CENTER, "+ New Slide", theme::font(12.0), t.text_faint);
+        ui.painter().text(r.center(), Align2::CENTER_CENTER, crate::i18n::tr("+ New Slide"), theme::font(12.0), t.text_faint);
     }
     if resp.clicked() {
         let _ = app.run("slide.new", json!({}));
@@ -202,30 +202,30 @@ pub fn slide_menu(app: &mut SlideApp, ui: &mut Ui, i: usize) {
         ("Copy", "edit.copy", json!({"scope": "slides"})),
         ("Paste", "edit.paste", json!({"scope": "slides"})),
     ] {
-        if ui.button(l).clicked() {
+        if ui.button(crate::i18n::tr(l)).clicked() {
             let _ = app.run(id, p);
             ui.close();
         }
     }
     ui.separator();
-    if ui.button("New Slide").clicked() {
+    if ui.button(crate::i18n::tr("New Slide")).clicked() {
         let _ = app.run("slide.new", json!({}));
         ui.close();
     }
-    if ui.button("Duplicate Slide").clicked() {
+    if ui.button(crate::i18n::tr("Duplicate Slide")).clicked() {
         let _ = app.run("slide.duplicate", json!({}));
         ui.close();
     }
-    if ui.button("Delete Slide").clicked() {
+    if ui.button(crate::i18n::tr("Delete Slide")).clicked() {
         let _ = app.run("slide.delete", json!({}));
         ui.close();
     }
     ui.separator();
-    if ui.button("Add Section").clicked() {
+    if ui.button(crate::i18n::tr("Add Section")).clicked() {
         let _ = app.run("section.add", json!({"at": i}));
         ui.close();
     }
-    ui.menu_button("Layout", |ui| {
+    ui.menu_button(crate::i18n::tr("Layout"), |ui| {
         let layouts: Vec<(String, u32)> = app
             .session
             .active()
@@ -238,11 +238,11 @@ pub fn slide_menu(app: &mut SlideApp, ui: &mut Ui, i: usize) {
             }
         }
     });
-    if ui.button("Reset Slide").clicked() {
+    if ui.button(crate::i18n::tr("Reset Slide")).clicked() {
         let _ = app.run("slide.reset", json!({}));
         ui.close();
     }
-    if ui.button("Format Background…").clicked() {
+    if ui.button(crate::i18n::tr("Format Background…")).clicked() {
         let _ = app.run("view.pane", json!({"pane": "background"}));
         ui.close();
     }
@@ -298,7 +298,7 @@ fn master_list(app: &mut SlideApp, ui: &mut Ui) {
                 );
                 let name = match li {
                     Some(l) => m.layouts.get(l).map(|x| x.name.clone()).unwrap_or_default(),
-                    None => format!("{} Slide Master", m.name),
+                    None => crate::i18n::format("{} Slide Master", std::slice::from_ref(&m.name)),
                 };
                 let resp = resp.on_hover_text(name);
                 if resp.clicked() {
diff --git a/crates/ui-egui/src/widgets.rs b/crates/ui-egui/src/widgets.rs
index 5827b396e..49e492f6d 100644
--- a/crates/ui-egui/src/widgets.rs
+++ b/crates/ui-egui/src/widgets.rs
@@ -33,6 +33,7 @@ pub fn big_button(ui: &mut Ui, icon: Icon, label: &str, enabled: bool) -> Respon
 
 /// Large button; with `split`, the label row is a separate dropdown target (returns its response).
 pub fn big_button_ex(ui: &mut Ui, icon: Icon, label: &str, enabled: bool, split: bool, selected: bool) -> (Response, Option<Response>) {
+    let label = crate::i18n::tr(label);
     let t = Tokens::get(ui.ctx());
     let font = theme::font(11.0);
     let lines: Vec<&str> = wrap_label(label);
@@ -65,7 +66,7 @@ pub fn big_button_ex(ui: &mut Ui, icon: Icon, label: &str, enabled: bool, split:
         let label_w = ui.fonts_mut(|f| f.layout_no_wrap(l.to_string(), font.clone(), col).size().x);
         let extra = if split && last { 9.0 } else { 0.0 };
         let x = rect.center().x - (label_w + extra) / 2.0;
-        painter.text(pos2(x, y), Align2::LEFT_TOP, l, font.clone(), col);
+        painter.text(pos2(x, y), Align2::LEFT_TOP, crate::i18n::tr(l), font.clone(), col);
         if split && last {
             chevron(&painter, pos2(x + label_w + 5.0, y + 7.0), 3.0, col);
         }
@@ -111,6 +112,7 @@ pub fn small_button(ui: &mut Ui, icon: Icon, label: &str, enabled: bool, selecte
 }
 
 pub fn small_button_ex(ui: &mut Ui, icon: Icon, label: &str, enabled: bool, selected: bool, split: bool) -> (Response, Option<Response>) {
+    let label = crate::i18n::tr(label);
     let t = Tokens::get(ui.ctx());
     let font = theme::font(12.0);
     let tw = if label.is_empty() { 0.0 } else { ui.fonts_mut(|f| f.layout_no_wrap(label.to_string(), font.clone(), t.text).size().x) + 5.0 };
@@ -138,7 +140,13 @@ pub fn small_button_ex(ui: &mut Ui, icon: Icon, label: &str, enabled: bool, sele
     }
     icons::paint(&painter, Rect::from_center_size(pos2(rect.min.x + 12.0, rect.center().y), vec2(17.0, 17.0)), icon, t.text, !enabled);
     if !label.is_empty() {
-        painter.text(pos2(rect.min.x + 24.0, rect.center().y), Align2::LEFT_CENTER, label, font, if enabled { t.text } else { t.text_faint });
+        painter.text(
+            pos2(rect.min.x + 24.0, rect.center().y),
+            Align2::LEFT_CENTER,
+            crate::i18n::tr(label),
+            font,
+            if enabled { t.text } else { t.text_faint },
+        );
     }
     if split {
         chevron(&painter, pos2(rect.max.x - 6.0, rect.center().y), 2.8, t.text_dim);
@@ -155,7 +163,7 @@ pub fn icon_toggle(ui: &mut Ui, icon: Icon, tip: &str, enabled: bool, on: bool)
         painter.rect_filled(rect, CornerRadius::same(4), c);
     }
     icons::paint(&painter, rect.shrink(3.0), icon, t.text, !enabled);
-    resp.on_hover_text(tip)
+    resp.on_hover_text(crate::i18n::tr(tip))
 }
 
 /// Icon with a colour bar under it and a dropdown arrow (Font Color, Highlight, Shape Fill…).
@@ -182,7 +190,7 @@ pub fn color_split(ui: &mut Ui, icon: Icon, tip: &str, color: Color32, enabled:
         if enabled { color } else { t.text_faint },
     );
     chevron(&painter, pos2(rect.max.x - 5.5, rect.center().y), 2.6, t.text_dim);
-    (main.on_hover_text(tip), arrow)
+    (main.on_hover_text(crate::i18n::tr(tip)), arrow)
 }
 
 /// A ribbon group: contents, then a thin vertical separator.
@@ -252,7 +260,7 @@ pub fn color_grid(ui: &mut Ui, scheme: &ColorScheme, none_label: Option<&str>) -
     let t = Tokens::get(ui.ctx());
     let mut out = None;
     ui.set_min_width(220.0);
-    ui.label(egui::RichText::new("Theme Colors").font(theme::bold(12.0)));
+    ui.label(egui::RichText::new(crate::i18n::tr("Theme Colors")).font(theme::bold(12.0)));
     let slots = [
         SchemeSlot::Lt1,
         SchemeSlot::Dk1,
@@ -275,7 +283,7 @@ pub fn color_grid(ui: &mut Ui, scheme: &ColorScheme, none_label: Option<&str>) -
             Stroke::new(if resp.hovered() { 2.0 } else { 1.0 }, if resp.hovered() { t.accent } else { t.border }),
             egui::StrokeKind::Inside,
         );
-        resp.on_hover_text(tip).clicked()
+        resp.on_hover_text(crate::i18n::tr(tip)).clicked()
     };
     egui::Grid::new("theme_colors").spacing(vec2(3.0, 1.0)).show(ui, |ui| {
         for slot in slots {
@@ -314,7 +322,7 @@ pub fn color_grid(ui: &mut Ui, scheme: &ColorScheme, none_label: Option<&str>) -
         }
     });
     ui.add_space(4.0);
-    ui.label(egui::RichText::new("Standard Colors").font(theme::bold(12.0)));
+    ui.label(egui::RichText::new(crate::i18n::tr("Standard Colors")).font(theme::bold(12.0)));
     ui.horizontal(|ui| {
         ui.spacing_mut().item_spacing.x = 3.0;
         for (c, name) in deckcraft_color::STANDARD_COLORS {
@@ -325,7 +333,7 @@ pub fn color_grid(ui: &mut Ui, scheme: &ColorScheme, none_label: Option<&str>) -
     });
     ui.separator();
     if let Some(n) = none_label
-        && ui.button(n).clicked()
+        && ui.button(crate::i18n::tr(n)).clicked()
     {
         out = Some(None);
     }
@@ -333,7 +341,7 @@ pub fn color_grid(ui: &mut Ui, scheme: &ColorScheme, none_label: Option<&str>) -
     let id = ui.id().with("hex");
     let mut hex: String = ui.data_mut(|d| d.get_temp::<String>(id).unwrap_or_default());
     ui.horizontal(|ui| {
-        ui.label("More Colors… #");
+        ui.label(crate::i18n::tr("More Colors… #"));
         let r = ui.add(egui::TextEdit::singleline(&mut hex).desired_width(70.0).hint_text("RRGGBB"));
         if r.lost_focus()
             && ui.input(|i| i.key_pressed(egui::Key::Enter))
@@ -371,7 +379,8 @@ pub fn gallery(
         if sel {
             painter.rect_stroke(rect.expand(1.0), CornerRadius::same(4), Stroke::new(1.5, t.accent), egui::StrokeKind::Inside);
         }
-        if resp.on_hover_text(tip(i)).clicked() {
+        let caption = tip(i);
+        if resp.on_hover_text(crate::i18n::tr(&caption)).clicked() {
             clicked = Some(i);
         }
     }
diff --git a/docs/gaps.md b/docs/gaps.md
index 6ea4130aa..ef99188f3 100644
--- a/docs/gaps.md
+++ b/docs/gaps.md
@@ -1,6 +1,6 @@
 # Where DeckCraft falls short of PowerPoint
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (core-workflow alpha gate added; stage stays alpha; previous: major, first itemized gap list; full re-measure against PowerPoint for Mac 16.113.4 and the open GitHub issues) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (localization gap narrowed further after the Brazilian Portuguese UI) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 Every known shortfall, one entry each, ranked by how much it stops someone who presents with
 PowerPoint from switching. This is the work list: pick from the top. Numbers are summarized in
@@ -21,7 +21,7 @@ revision history.
 | 2 | Data loss and crashes on common paths (#60, #40, #59) | Stability | B | 6–12 | this file |
 | 3 | PPTX round trip drops comment threads, media options, rewind (#70, #74, #77) | File format | B | 3–6 | [file-format-parity.md](file-format-parity.md) |
 | 4 | EMF/WMF and SVG pictures don't render | File format | B | 8–14 | [file-format-parity.md](file-format-parity.md) |
-| 5 | No localization: English only | Localization | B (infra + 5 languages) | 55–90 | [localization-parity.md](localization-parity.md) |
+| 5 | Target languages beyond English missing; Ukrainian and Brazilian Portuguese UI available | Localization | B (5 languages) | 55–90 | [localization-parity.md](localization-parity.md) |
 | 6 | No printing | Feature | B | 5–8 | [file-format-parity.md](file-format-parity.md) |
 | 7 | Fonts: only Regular, Bold and Italic faces (#69) | Feature | B | 3–5 | [ui-parity.md](ui-parity.md) |
 | 8 | Image paste fails on Windows and Linux (#53) | Feature | B | 2–4 | [ui-parity.md](ui-parity.md) |
@@ -218,9 +218,10 @@ Detail in [hardware-parity.md](hardware-parity.md).
 
 Detail in [localization-parity.md](localization-parity.md).
 
-- **English only, no string catalog** (#15, #30; Ukrainian PR #34 open). PowerPoint for Mac ships
-  26 languages. Infrastructure 8–14 h, then 3–16 h per language plus native review. Beta needs the
-  infrastructure and at least Simplified Chinese, Spanish, French, German and Japanese (~30–45 h).
+- **Target languages beyond English missing.** English, Ukrainian and Brazilian Portuguese now have
+  a UI catalog and system-language selection (#15, #30). PowerPoint for Mac ships 26 languages. Additional
+  translations need 3–16 h per language plus native review. Beta needs at least Simplified
+  Chinese, Spanish, French, German and Japanese (~30–45 h).
 - **No IME composition in text editing** (CJK input). 3–6 h.
 - **UI isn't mirrored for right-to-left languages.** 6–10 h.
 - **Browser build draws Arabic and Hebrew as missing-glyph boxes in exports** (#81). 1–2 h.
@@ -247,5 +248,7 @@ Detail in [localization-parity.md](localization-parity.md).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Narrowed localization gap further: Brazilian Portuguese catalog added; other target languages, IME and RTL UI remain |
+| 2026-10-10 | minor | Narrowed localization gap: Ukrainian UI catalog and language selection exist; other target languages, IME and RTL UI remain |
 | 2026-10-10 | minor | Noted that no gap blocks alpha (core-workflow gate passes) |
 | 2026-10-10 | major | Created: every gap from the 2026-10-10 re-measure and the 16 open GitHub issues, ranked, with beta blockers marked |
diff --git a/docs/localization-parity.md b/docs/localization-parity.md
index 24e308a12..1b6ca7c90 100644
--- a/docs/localization-parity.md
+++ b/docs/localization-parity.md
@@ -1,18 +1,22 @@
 # Localization parity with PowerPoint
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** major (created; string count measured from source, PowerPoint's localizations read from its bundle) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Brazilian Portuguese UI catalog added alongside Ukrainian) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
-DeckCraft's interface is English only today: strings are literals in the UI and engine code, with
-no catalog and no language switch. Requests: #15 (follow the system language), #30 and PR #34
-(Ukrainian, open). Dimension score: **~8% ready** (estimated: English complete, slide-text script
+DeckCraft's interface supports English, Ukrainian and Brazilian Portuguese through
+`crates/ui-egui/src/i18n/uk.tsv` and `crates/ui-egui/src/i18n/pt-br.tsv`.
+Preferences offers the system language or an explicit choice; desktop choices persist across
+restarts. Menus, ribbon, command palette, panels, dialogs and presenter controls are translated,
+with English fallback. Presentation content, custom placeholder prompts and command IDs keep
+their original values. This addresses #15 (follow the system language) and #30 (Ukrainian).
+Dimension score: **~8% ready** (estimated: English complete, slide-text script
 support partly there), **55–90 h** to parity plus native-speaker review.
 
 ## How the numbers are measured
 
 - **UI strings:** ~1,050 user-visible string literals (measured 2026-10-10: distinct
   capitalized literals in `crates/ui-egui/src`, `crates/engine/src/cmd` and `crates/model/src`,
-  including the 226 command labels). A catalog will refine the count; until then percentages are
-  against this figure.
+  including the 226 command labels). Ukrainian catalog tests check command, menu, gallery and
+  literal translation-call coverage, unique keys, placeholders and bundled Cyrillic glyphs.
 - **Script support** is about slide text (what users type and import), separately from the UI:
   bidi and shaping live in `crates/text` (UAX #9, HarfRust, UAX #14 line breaking).
 - **PowerPoint's languages:** `Contents/Resources/*.lproj` in PowerPoint 16.113.4: ar, cs, da, de,
@@ -25,6 +29,8 @@ support partly there), **55–90 h** to parity plus native-speaker review.
 | Language | Code | UI strings translated | Dialogs / tooltips / help | Script support (slide text) | Native review | Status | PowerPoint for Mac UI | Hours to full |
 |---|---|---|---|---|---|---|---|---|
 | English | en | ~1,050 / ~1,050 (100%) | yes / yes / no help | full | yes | **full** | yes | 0 |
+| Ukrainian | uk | UI catalog; coverage checked by tests | UI captions; diagnostics retain original wording | Cyrillic; bundled UI fonts tested | no | available; English fallback | no | — |
+| Portuguese (Brazil) | pt-BR | UI catalog; coverage checked by tests | UI captions; diagnostics retain original wording | Latin; bundled UI fonts tested | no | available; English fallback | yes (pt-BR, pt-PT) | — |
 | Simplified Chinese (Mandarin) | zh-Hans | 0 (0%) | no | renders with system CJK fonts (asset policy excludes Noto CJK from builds); UAX #14 breaking; **no IME composition**; no true vertical layout | no | none | yes | 6–10 (incl. IME) |
 | Spanish | es | 0 (0%) | no | full (Latin) | no | none | yes (es, es-MX) | 3–5 |
 | Hindi | hi | 0 (0%) | no | Devanagari shaping through HarfRust, untested; no bundled Devanagari font | no | none | **no** (Windows only) | 4–7 |
@@ -37,14 +43,13 @@ support partly there), **55–90 h** to parity plus native-speaker review.
 | Korean | ko | 0 (0%) | no | system Hangul fonts; no IME composition | no | none | yes | 4–7 |
 | Vietnamese | vi | 0 (0%) | no | stacked diacritics through HarfRust | no | none | **no** (Windows only) | 3–5 |
 
-Other languages shipped: **0** (Ukrainian is in review as PR #34). PowerPoint for Mac ships 16 more
+Other languages shipped: **2 (Ukrainian and Brazilian Portuguese)**. PowerPoint for Mac ships 16 more
 than the twelve above: Czech, Danish, Greek, Finnish, Hebrew, Hungarian, Italian, Dutch, Norwegian,
 Polish, Russian, Slovak, Swedish, Thai, Turkish and Traditional Chinese.
 
-Per-language hours assume the infrastructure exists: **8–14 h** once for a string catalog (copy a
-sibling app's approach, e.g. EffectCraft's menu and panel catalogs), a language setting that follows
-the system (#15), plural and number formatting, and an `xtask` check that every key has a
-translation. IME composition (3–6 h) is counted once, under Simplified Chinese.
+The UI catalog, system-language setting and Ukrainian integer-count formatting now exist.
+Additional languages still need catalogs, appropriate plural/number formatting and native review.
+IME composition (3–6 h) is counted once, under Simplified Chinese.
 
 ## Proofing languages
 
@@ -56,4 +61,6 @@ common misspellings (`crates/engine/src/cmd/review.rs`); see [gaps.md](gaps.md#p
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Added the Brazilian Portuguese catalog (`pt-br.tsv`), language selection and bundled-font coverage |
+| 2026-10-10 | minor | Added Ukrainian catalog, language selection, English fallback, preserved custom prompts and bundled-font coverage |
 | 2026-10-10 | major | Created: twelve-language table, ~1,050 UI strings measured, PowerPoint for Mac's 26 languages from its bundle |
diff --git a/docs/roadmap.md b/docs/roadmap.md
index da2757376..4c8114f70 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -1,6 +1,6 @@
 # DeckCraft roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (core-workflow alpha gate added; stage stays alpha; previous: major, created; milestones carried from the local execution plan, the beta plan built from gaps.md) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Brazilian Portuguese UI added on the localization infrastructure) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 Forward-looking: where DeckCraft is going and in what order. The one-page summary is
 [ROADMAP.md](../ROADMAP.md); every shortfall is in [gaps.md](gaps.md); numbers are in
@@ -29,7 +29,8 @@ points and lead the beta plan.
 2. **PPTX on real decks:** build an owned corpus, round-trip checks in CI, fix what breaks;
    comment threads, media options and rewind on save (#70, #74, #77); EMF/WMF and SVG. 31–55 h.
 3. **Review the open PRs:** equations (#55), browser print (#66), Morph alignment (#67), macOS
-   open-with (#68), font lookup (#80), Ukrainian (#34, after the catalog exists). 4–8 h.
+   open-with (#68), font lookup (#80). 4–8 h. Ukrainian UI and its catalog are available (#34);
+   Brazilian Portuguese rides on the same catalog infrastructure.
 
 ## Plan to beta (~120–210 h; ~40–70 h wall clock with 3–4 agents)
 
@@ -43,7 +44,7 @@ Beta means ~75% ready for real work and opening and saving PowerPoint's `.pptx`
 | 3 | PPTX round-trip losses (#70, #74, #77), `.potx`/`.ppsx`/`.pptm` content types, embedded fonts | 8–15 | File formats → 80% |
 | 4 | EMF/WMF and SVG pictures | 8–14 | File formats, Pictures |
 | 5 | Vector PDF, printing | 10–16 | File formats, Files |
-| 6 | Localization infrastructure + zh-Hans, es, fr, de, ja (with IME) | 27–46 | Localization 8 → ~40% |
+| 6 | Additional catalogs for zh-Hans, es, fr, de, ja (with IME) | 27–46 | Localization 8 → ~40% |
 | 7 | Font weights (#69), image paste (#53), Tab in text (#78) | 6–11 | Features |
 | 8 | Charts: data grid, elements | 6–10 | Features |
 | 9 | Animation Pane timeline, preview, effect options | 5–8 | Features |
@@ -109,5 +110,7 @@ plan above.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Recorded the Brazilian Portuguese catalog on the shared localization infrastructure |
+| 2026-10-10 | minor | Recorded Ukrainian UI and catalog infrastructure; beta localization work now focuses on additional languages and IME |
 | 2026-10-10 | minor | Added the alpha gate (six core workflows): all pass, two with partial depth; stage stays alpha |
 | 2026-10-10 | major | Created: current focus, ranked beta plan with hours, milestones M0–M14 with status, the old alpha checklist as history |
diff --git a/docs/target-app-parity.md b/docs/target-app-parity.md
index 0c27d893d..87a89e2da 100644
--- a/docs/target-app-parity.md
+++ b/docs/target-app-parity.md
@@ -1,6 +1,6 @@
 # DeckCraft vs Microsoft PowerPoint: parity assessment
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (hours to ~95% per audience added; ready recomputed from written weights, 56% → 55%; stage stays alpha; previous: major, full re-measure against PowerPoint for Mac 16.113.4; replaces the parity sections of ROADMAP.md) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (localization evidence updated for the Brazilian Portuguese UI) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 The authoritative answer to "how close is DeckCraft to PowerPoint, and how much work is left?".
 [ROADMAP.md](../ROADMAP.md) summarizes it; [gaps.md](gaps.md) itemizes every shortfall;
@@ -71,7 +71,7 @@ The weights are what those users actually depend on, written down so the total c
 | Performance | 5% | ~55% | 10–20 | [hardware-parity.md](hardware-parity.md) | Unmeasured against PowerPoint. Slides rasterize on the CPU (`vello_cpu`); Morph re-aligns outlines every frame (#67) |
 | Hardware | 5% | ~40% | 25–45 | [hardware-parity.md](hardware-parity.md) | GPU-composited window (wgpu), but CPU slide raster, software-only video decode, presenter view not placed on the second display, no pen pressure, no pinch zoom |
 | Platforms | 5% | ~80% | 5–10 | [ROADMAP.md](../ROADMAP.md) | Ahead in reach: macOS, Windows x64/x86/arm64, Linux (5 formats), FreeBSD and the web, all from one release workflow. Held back by the Windows GPU crashes and Linux/Windows clipboard gaps |
-| Localization | 5% | ~8% | 55–90 + native review | [localization-parity.md](localization-parity.md) | English only; no string catalog. PowerPoint for Mac ships 26 languages. Bidi and Arabic shaping in slide text exist |
+| Localization | 5% | ~8% | 55–90 + native review | [localization-parity.md](localization-parity.md) | English, Ukrainian and Brazilian Portuguese UI catalogs with system-language selection. PowerPoint for Mac ships 26 languages; Ukrainian and Brazilian Portuguese are outside that count. Bidi and Arabic shaping in slide text exist |
 | Ecosystem (templates, add-ins) | 3% | ~25% | 10–20 | [gaps.md](gaps.md) | 8 original themes vs PowerPoint's large template gallery; no add-ins or VBA (out of scope by policy) |
 | AI features | 2% | ~10% | 20–40 (owner decision on models) | [gaps.md](gaps.md) | No Designer, Copilot, Speaker Coach, live subtitles or Translate (all Microsoft cloud services). Agents drive every command over MCP instead |
 | **Total** | 100% | **~55%** (Σ weight × ready = 55.3) | **~365–650** | | |
@@ -276,6 +276,8 @@ scored done (16 open issues).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Updated localization evidence for the Brazilian Portuguese UI; overall readiness estimates stay unchanged |
+| 2026-10-10 | minor | Updated localization evidence for Ukrainian UI; overall readiness estimates stay unchanged |
 | 2026-10-10 | minor | Added the readiness-by-audience table: each number gets its own hours to ~95% (full 340–600, mainstream 150–250, essentials 50–90). The full number stays an additive weighted sum; no change to the percentages |
 | 2026-10-10 | minor | Added the mainstream practitioner (~53%) and essentials user (~62%) numbers with written weights, discounts and user evidence. Features dimension recomputed from written area weights (66% judgement → 62.4% weighted mean), which moves ready for real work from ~56% to ~55%; stage unchanged |
 | 2026-10-10 | minor | Stage checked against the core-workflow gate (all six pass); stays alpha |