Ajimaru · Ajimaru · Jul 17, 2026 · Jul 17, 2026 · Jul 17, 2026
diff --git a/octoprint_SpoolManager/__init__.py b/octoprint_SpoolManager/__init__.py
@@ -1039,6 +1039,8 @@ def get_settings_defaults(self):
         settings[SettingsKeys.SETTINGS_KEY_QR_CODE_BACKGROUND_COLOR] = "#ffffff"
         settings[SettingsKeys.SETTINGS_KEY_QR_CODE_WIDTH] = "100"
         settings[SettingsKeys.SETTINGS_KEY_QR_CODE_HEIGHT] = "100"
+        settings[SettingsKeys.SETTINGS_KEY_QR_CODE_LABEL_WIDTH_MM] = "89"
+        settings[SettingsKeys.SETTINGS_KEY_QR_CODE_LABEL_HEIGHT_MM] = "36"
 
         ## Export / Import
         settings[SettingsKeys.SETTINGS_KEY_IMPORT_CSV_MODE] = SettingsKeys.KEY_IMPORTCSV_MODE_APPEND

diff --git a/octoprint_SpoolManager/api/SpoolManagerAPI.py b/octoprint_SpoolManager/api/SpoolManagerAPI.py
@@ -765,17 +765,56 @@ def generateSpoolQRCodeHTMLView(self, databaseId):
                 safeFinish = re.sub(r"[^\w\s#,()-]", "", str(spoolModel.finish))
                 finishHtml = "<h3>Spoolfinish: " + safeFinish + "</h3>"
             htmlContent = \
+                        "<div class='spm-label-text'>" \
                         "<h3>Database Id: " + str(spoolModel.databaseId) + "</h3>" \
                         "<h3>Spoolname: " + spoolModel.displayName + "</h3>" \
                         + colorHtml \
                         + finishHtml + \
-                        "<img loading='lazy' src='" + qrCodeImageUrl + "' />"
+                        "</div>" \
+                        "<img loading='lazy' src='" + qrCodeImageUrl + "' />" \
+                        "<button class='spm-print-btn' onclick='window.print()'>Print Label</button>"
         else:
             htmlContent = "<h3>Spool with database Id not found</h3>"
 
+        # Label printing (print button, @page label size) based on ideas from
+        # https://github.com/mdziekon/OctoPrint-SpoolManager/issues/47 (ScottGibb)
+        # and PRs mdziekon#54 / dojohnso#59 (reimplemented, not merged)
+        # label size for printing, from settings (fallback: Dymo 99012 address label)
+        def _labelDimension(settingsKey, defaultValue):
+            try:
+                value = float(self._settings.get([settingsKey]))
+                if (value <= 0):
+                    return defaultValue
+                return value
+            except (TypeError, ValueError):
+                return defaultValue
+        labelWidthMM = _labelDimension(SettingsKeys.SETTINGS_KEY_QR_CODE_LABEL_WIDTH_MM, 89.0)
+        labelHeightMM = _labelDimension(SettingsKeys.SETTINGS_KEY_QR_CODE_LABEL_HEIGHT_MM, 36.0)
+        labelWidth = "%g" % labelWidthMM
+        labelHeight = "%g" % labelHeightMM
+        qrMaxHeight = "%g" % max(labelHeightMM - 4.0, 1.0)
+
+        qrCodeStyle = \
+                    "<style>" \
+                    "body{display:flex;flex-direction:column;align-items:center;" \
+                    "justify-content:center;text-align:center;}" \
+                    "img{max-width:100%;}" \
+                    "h3{font-size:2em;margin:0.2em 0;}" \
+                    ".spm-print-btn{margin-top:12px;padding:6px 18px;font-size:1.1em;cursor:pointer;}" \
+                    "@page{size:" + labelWidth + "mm " + labelHeight + "mm;margin:0;}" \
+                    "@media print{" \
+                    ".spm-print-btn{display:none;}" \
+                    "body{margin:0;height:" + labelHeight + "mm;flex-direction:row;justify-content:flex-start;" \
+                    "align-items:center;gap:2mm;text-align:left;}" \
+                    ".spm-label-text{order:2;overflow:hidden;}" \
+                    "img{max-height:" + qrMaxHeight + "mm;width:auto;order:1;margin-left:2mm;}" \
+                    "h3{font-size:8pt;margin:0;}" \
+                    "}" \
+                    "</style>"
+
         qrCodeHTMLViewTemplate = ""\
                                 "<html>" \
-                                "<head><link rel='icon' href='data:,'></head>" \
+                                "<head><link rel='icon' href='data:,'>" + qrCodeStyle + "</head>" \
                                 + htmlContent +\
                                 "</html>" \
                                 ""

diff --git a/octoprint_SpoolManager/common/SettingsKeys.py b/octoprint_SpoolManager/common/SettingsKeys.py
@@ -27,6 +27,8 @@ class SettingsKeys():
 	SETTINGS_KEY_QR_CODE_BACKGROUND_COLOR = "qrCodeBackgroundColor"
 	SETTINGS_KEY_QR_CODE_WIDTH = "qrCodeWidth"
 	SETTINGS_KEY_QR_CODE_HEIGHT = "qrCodeHeight"
+	SETTINGS_KEY_QR_CODE_LABEL_WIDTH_MM = "qrCodeLabelWidthMM"
+	SETTINGS_KEY_QR_CODE_LABEL_HEIGHT_MM = "qrCodeLabelHeightMM"
 
 	## Export / Import
 	SETTINGS_KEY_IMPORT_CSV_MODE = "importCSVMode"

diff --git a/octoprint_SpoolManager/templates/SpoolManager_dialog_editSpool.jinja2 b/octoprint_SpoolManager/templates/SpoolManager_dialog_editSpool.jinja2
@@ -254,6 +254,17 @@ Example: {material}-{color}-{id} becomes PETG-Silver-42."><i class="fas fa-info-
                                                   textInput: spoolDialog.spoolItemForEditing.finishCustomText" />
                             </div>
                         </div>
+                        {# Preview-Label button, simple view only (full view: QR-code thumbnail is the link).
+                           Idea from mdziekon#54 / dojohnso#59 (ScottGibb), reimplemented #}
+                        <div class="control-group" style="margin-top: 12px;" data-bind="visible: spoolDialog.simpleMode() && spoolDialog.isExistingSpool() && pluginSettings.qrCodeEnabled()">
+                            <label class="control-label">QR Label</label>
+                            <div class="controls">
+                                <a class="btn btn-small" target="_new"
+                                   data-bind="attr: $root.generateQRCodeImageSourceAttribute(spoolDialog.spoolItemForEditing.databaseId(),
+                                                                                             spoolDialog.spoolItemForEditing.displayName(),
+                                                                                             'htmlView')">Preview Label</a>
+                            </div>
+                        </div>
                         <div class="control-group no-bottom-gap" data-bind="visible: !spoolDialog.simpleMode()">
                             <label class="control-label">Flow Rate Compensation<sup>4</sup></label>
                             <div class="controls">

diff --git a/octoprint_SpoolManager/templates/SpoolManager_settings.jinja2 b/octoprint_SpoolManager/templates/SpoolManager_settings.jinja2
@@ -214,6 +214,22 @@ FPE;	2.16
                     </div>
                 </div>
                 <hr/>
+                <div class="control-group">
+                    <label class="control-label">Label size (print)</label>
+                    <div class="controls">
+                        <div class="input-append">
+                            <input type="number" step="1" min="1" class="input-mini text-right" data-bind="value: pluginSettings.qrCodeLabelWidthMM">
+                            <span class="add-on">mm</span>
+                        </div>
+                        &times;
+                        <div class="input-append">
+                            <input type="number" step="1" min="1" class="input-mini text-right" data-bind="value: pluginSettings.qrCodeLabelHeightMM">
+                            <span class="add-on">mm</span>
+                        </div>
+                        <span class="help-block">Page size (width &times; height) used when printing the label via "Preview Label". Default 89 &times; 36 mm (Dymo 99012 address label).</span>
+                    </div>
+                </div>
+                <hr/>
                 <div class="control-group">
                     <div class="controls">
                         <label class="checkbox">

diff --git a/setup.py b/setup.py
@@ -15,7 +15,7 @@
 
 # The plugin's version. Can be overwritten within OctoPrint's internal data via __plugin_version__ in the plugin module
 #
-plugin_version = "1.8.0a3.dev87"
+plugin_version = "1.8.0a3.dev90"
 
 # The plugin's description. Can be overwritten within OctoPrint's internal data via __plugin_description__ in the plugin
 # module