A simple, synced scratchpad extension for Firefox that lets you quickly jot down notes that automatically sync across all your Firefox devices.
- Clean Interface: Full-screen textarea for distraction-free note-taking
- Auto-Save: Your notes are automatically saved as you type
- Cross-Device Sync: Notes sync across all your Firefox devices using Firefox Sync
- Simple & Fast: No login required, no configuration needed - just install and start typing
-
Open Firefox and navigate to
about:debugging#/runtime/this-firefox -
Click "Load Temporary Add-on"
-
Navigate to the
scratchpadfolder and select themanifest.jsonfile -
The extension will be loaded and the Scratchpad icon will appear in your toolbar
For development purposes, temporary add-ons are removed when Firefox restarts. To make it permanent:
Option 1: Use Firefox Developer Edition or Nightly
- Load the extension as a temporary add-on (it will persist across restarts in these versions)
Option 2: Sign and install
- Create an account at addons.mozilla.org
- Submit your extension for signing (you can mark it as "unlisted" for personal use)
- Once signed, install the .xpi file
- Click the Scratchpad icon in your Firefox toolbar
- A new tab will open with a blank textarea
- Start typing - your content will automatically save
- Open Scratchpad on any other Firefox device signed into the same Firefox Account to see your synced notes
The extension uses Firefox's storage.sync API, which:
- Automatically syncs data across devices signed into the same Firefox Account
- Works just like bookmark sync - no additional setup required
- Updates in real-time when changes are detected from other devices
- Manifest Version: 2 (Firefox standard)
- Permissions:
storage(for sync functionality) - Storage API:
browser.storage.sync - Auto-save Delay: 500ms after typing stops
manifest.json- Extension configurationbackground.js- Handles opening scratchpad tabsscratchpad.html- Main scratchpad interfacescratchpad.css- Stylingscratchpad.js- Save/load functionality with syncicons/- Extension icons
- All data is stored locally and synced through your Firefox Account
- No external servers or third-party services are used
- No tracking or analytics
Free to use and modify for personal use.