Leaf

Double-click to read. Close to leave.
双击就读，关窗就走。

An open-source EPUB, MOBI and AZW3 reader for Mac that reads like a Kindle.
开源的 Mac 电子书阅读器，读起来像 Kindle。

Download · Website · 中文

Why Leaf

One book, one window. Double-click a book in Finder to read it; close the window and Leaf quits.

• No library: no import, no copies, no account
• Remembers your place: even after you rename or move the file
• Native, 2.7 MB: real Mac menus, shortcuts, Look Up and Translate

Leaf is an independent project and is not affiliated with Amazon. Kindle is a trademark of Amazon.com, Inc.

Reads like a Kindle

• Time left: click the bottom-right corner to cycle percent, location, time left in chapter and in book, estimated from how fast you read
• Your type: any font, size 80–200%, five weights, line / paragraph / letter spacing, margins, alignment
• Presets: Compact, Standard, Large, Low Vision, plus your own
• Footnotes in place: click a marker and the note pops up; Back or ⌘[ returns from any jump
• Find and go to: ⌘F lists results by chapter; ⌘L jumps to a percent or location
• Floating contents: ⌘T; it floats over the page, so nothing reflows
• Layout: text width, one or two columns, click the page edges to turn
• Three formats: EPUB, MOBI and AZW3, no conversion (MOBI/AZW3 must be DRM-free)
• Images: double-click to view full size
• Themes: paper, sepia, dark or system
• Eight languages: English, 简体中文, 繁體中文, 日本語, 한국어, Français, Deutsch, Español

How it compares

Readest does the most. Apple Books comes with your Mac. Calibre manages collections best. Leaf does one thing: open a book. See the full table.

Roadmap

Highlights and notes, bookmarks, export, one-step dictionary lookup and a vocabulary list are next. Not planned: PDF, a store, an account, sync.

Install

1. Download Leaf.dmg and drag Leaf into Applications.
2. First launch: Leaf is not notarized by Apple, so macOS blocks it once. Open it and dismiss the warning, then go to System Settings › Privacy & Security, scroll down and click Open Anyway.

Requires macOS 15 or later.

Shortcuts

Action	Keys
Turn page	← → · Space · swipe left/right on the trackpad
Contents	⌘T, t, or click the chapter name bottom-left
Font size	⌘= larger · ⌘- smaller · ⌘0 actual size
Find	⌘F · ⌘G next · ⇧⌘G previous
Go to	⌘L
Size and theme	Aa in the top-right corner, or right-click the page
All settings	⌘,

Build from source

Requires Xcode 26 and XcodeGen:

xcodegen generate
./scripts/install.sh      # build and install to /Applications
./scripts/make-dmg.sh     # package a DMG into ~/Downloads

Architecture notes and known pitfalls are in DEVELOPMENT.md (Chinese).

Credits

Rendering and format parsing by foliate-js (MIT). Sample books in TestBooks/ are from Project Gutenberg and in the public domain.

License

MIT

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中文

为什么做 Leaf

一本书，一个窗口。在访达里双击就读，关掉窗口，Leaf 就退出。

• 没有书库：不导入，不复制文件，不要账号
• 记得读到哪：改名、挪位置，也能接着读
• 原生，2.7 MB：系统菜单、快捷键、查询与翻译，都是 Mac 原装

Leaf 是独立项目，与 Amazon 无关。Kindle 是 Amazon.com, Inc. 的商标。

读起来像 Kindle

• 还要读多久：点右下角循环百分比、位置、本章剩余、全书剩余，按你的阅读速度估算
• 排版随你调：任意字体，字号 80%–200%，字重五级，行距、段距、字距，页边距，对齐方式
• 排版预设：紧凑、标准、大字、低视力，也能存自己的
• 脚注就地弹出：点编号即弹出注释；跳转后按「返回」或 ⌘[ 回原处
• 查找与跳转：⌘F 按章节列出结果；⌘L 跳到百分比或位置号
• 浮动目录：⌘T 打开，浮在页面上，书页不动
• 版式：版心宽度，单栏或双栏，点页面两侧翻页
• 三种格式：EPUB、MOBI、AZW3，无需转换（MOBI/AZW3 须无 DRM）
• 看图：双击放大
• 主题：纸白、米黄、深色或跟随系统
• 8 种语言：英文、简体中文、繁体中文、日文、韩文、法文、德文、西班牙文

对比

Readest 功能最全，Apple Books 随系统附带，Calibre 最会管书。Leaf 只做一件事：打开一本书。完整对比见介绍页。

路线

接下来做高亮与笔记、书签、导出、一步查词、生词本。不做：PDF、商店、账号、同步。

安装

1. 下载 Leaf.dmg，把 Leaf 拖进「Applications」
2. 第一次打开：Leaf 没有经过 Apple 公证，系统会先拦下。按下面操作放行一次： 双击 Leaf 后点「完成」→ 打开「系统设置 › 隐私与安全性」→ 拉到底部点「仍要打开」

需要 macOS 15 或更高。

快捷键

操作	按键
翻页	← → · 空格 · 触控板左右滑
目录	⌘T、t，或点左下角章名
字号	⌘= 放大 · ⌘- 缩小 · ⌘0 还原
查找	⌘F · ⌘G 下一个 · ⇧⌘G 上一个
跳转	⌘L
字号与主题	窗口右上角 Aa，或在正文上右键
全部设置	⌘,

从源码构建

需要 Xcode 26 与 XcodeGen：

xcodegen generate
./scripts/install.sh      # 构建并安装到 /Applications
./scripts/make-dmg.sh     # 打包 DMG 到 ~/Downloads

架构和踩过的坑见 DEVELOPMENT.md。

致谢

排版与格式解析由 foliate-js（MIT）完成。TestBooks/ 中的样书来自 Project Gutenberg，属公有领域。

协议

MIT