
SleepyTabs - Tab Suspender & Manager por Sato
SleepyTabs is a browser extension that helps you manage browser tabs by automatically putting inactive tabs to sleep to save memory and improve browser performance.
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Necesitarás Firefox para usar esta extensión
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Sobre esta extensión
SleepyTabs - Browser Tab Suspender & Manager
SleepyTabs is a browser extension that helps you manage browser tabs by automatically putting inactive tabs to sleep to save memory and improve browser performance.
✨ Key Features
🛠️ Tab Management
🎭 Themes
Choose from multiple professionally designed themes:
Add beautiful wallpapers to your sleeping tabs with adjustable brightness!
📂 Sessions
⌨️ Keyboard Shortcuts
Usage
Basic Controls
Configuration Options
Advanced Options
Whitelist
Add domains or URLs to the whitelist to prevent specific sites from being put to sleep.
Technical Details
SleepyTabs is made for Firefox with support for Chrome.
SleepyTabs is built using browser extension APIs and works by:
Privacy
SleepyTabs operates entirely within your browser. No data is sent to external servers, and all tab information is stored locally in your browser's storage.
Contributing
Contributions are welcome! Feel free to submit issues or pull requests to help improve SleepyTabs.
📥 Installation
Firefox || Chrome
🚀 From Source
If you want to build and test SleepyTabs, you can follow these steps:
The extension will be built and saved in the
License
SleepyTabs is licensed under the GNU Affero General Public License v3.0
SleepyTabs is a browser extension that helps you manage browser tabs by automatically putting inactive tabs to sleep to save memory and improve browser performance.
✨ Key Features
- 🔄 Automatic Tab Sleeping - Save memory after your chosen inactivity period
- 🎛️ Intuitive Controls - Sleep or wake tabs with simple clicks or keyboard shortcuts
- 🎨 Beautiful Sleeping Pages - Customize with themes and wallpapers
- ⚙️ Flexible Configuration - Tailor to your exact preferences
- 🔒 Privacy Focused - Works entirely in your browser, no data sent externally
- 🎯 Context Menu: Right-click on a tab/page for SleepyTabs options.
- 🌐 Sync Settings: Synchronize settings across multiple browsers
- 📦 Import/Export: Easily import/export your settings
- 📂 Sessions: View and restore recently closed tabs/windows and snapshots
🛠️ Tab Management
- Sleep tabs automatically after customizable inactivity periods
- Whitelist important sites that should never sleep
- Configure which tabs can sleep (pinned, audible, etc.)
- Sync your settings across multiple browsers
- Easily export/import your configuration
🎭 Themes
Choose from multiple professionally designed themes:
- Dark (Default)
- Light
- Midnight
- Sepia
- Solarized
- Nord
Add beautiful wallpapers to your sleeping tabs with adjustable brightness!
📂 Sessions
- Recently Closed Management: Easily restore or forget recently closed tabs and windows
- Session Snapshots: Create, edit, and restore snapshots of your current browser session
- Tab Tagging: Organize tabs with customizable tags and colors
- Filtering: Filter tabs by domain, time closed, and tags
⌨️ Keyboard Shortcuts
- Put current tab to sleep:
Ctrl+Shift+1
- Sleep all tabs:
Ctrl+Shift+2
- Wake all tabs:
Ctrl+Shift+3
- Open SleepyTabs sidebar:
Ctrl+Shift+4
- Wake sleeping tabs:
Enter
Usage
Basic Controls
- Put Tab to Sleep: Sleeps the current tab
- Sleep All Tabs: Sleeps all eligible tabs
- Wake All Tabs: Restores all sleeping tabs
Note: The "Put Tab to Sleep" button bypasses whitelist settings and other tab exclusion rules, allowing you to manually sleep any tab. The automatic sleep and "Sleep All Tabs" features will respect your whitelist and other settings.
Configuration Options
- Put tabs to sleep after: Set the inactivity time before tabs sleep (in minutes)
- Maximum active tabs: Set a limit on how many tabs can remain active
- Auto-wake tabs when clicked: When enabled, sleeping tabs automatically wake up when clicked
- Themes: Customize the appearance of the sleeping pages
- Wallpaper settings:
- Enable/disable custom wallpapers
- Set custom wallpaper URL
- Adjust wallpaper brightness
- Tab grouping: Configure automatic tab grouping options
- Tab title prefix: Choose from emoji prefixes (💤, 😴, 🛌, 🌙, 🔕, ⏸️) or set a custom prefix
Advanced Options
- Customize check interval for inactive tabs
- Set grace period for tab sleeping
- Configure which types of tabs can sleep:
- Audible tabs
- Active tabs
- Private tabs
- Loading tabs
- Tabs requesting attention
- Pinned tabs
- Grouped tabs
- Reader mode tabs
- Experimental features toggle
Whitelist
Add domains or URLs to the whitelist to prevent specific sites from being put to sleep.
Technical Details
SleepyTabs is made for Firefox with support for Chrome.
SleepyTabs is built using browser extension APIs and works by:
- Monitoring tab activity using browser events
- Storing tab information in the browser's local storage
- Replacing inactive tabs with lightweight placeholder pages
- Restoring tabs to their original state when needed
Privacy
SleepyTabs operates entirely within your browser. No data is sent to external servers, and all tab information is stored locally in your browser's storage.
Contributing
Contributions are welcome! Feel free to submit issues or pull requests to help improve SleepyTabs.
📥 Installation
Firefox || Chrome
🚀 From Source
If you want to build and test SleepyTabs, you can follow these steps:
- Clone the repository:
git clone https://gitlab.com/satoru8/sleepytabs.git
- Install dependencies:
- Using Bun (recommended):
bun i
- Using npm:
npm install
- Run the extension:
- Using Bun:
- For development:
bun run build
- For production:
bun run package
- For development:
- Using npm/Node.js:
- For development:
node build.js
- For production:
NODE_ENV=production node build.js
- For both browsers:
BUILD_BOTH=true node build.js
- For development:
- Load the extension in Firefox or Chrome
The extension will be built and saved in the
distF
(Firefox) & distC
(Chrome) directories. Packaged zips will be available in the artifacts directory.Note: The project is optimized for Bun, but can work with Node.js. You may need to set environment variables manually when using Node.js directly instead of Bun.
License
SleepyTabs is licensed under the GNU Affero General Public License v3.0
Rated 4,7 by 7 reviewers
Permissions and dataSaber más
Permisos requeridos:
- Mostrarte notificaciones
- Acceder a las pestañas cerradas recientemente
- Acceder a las pestañas del navegador
Data collection:
- The developer says this extension doesn't require data collection.
Más información
- Enlaces del complemento
- Versión
- 1.3.6
- Tamaño
- 160,75 KB
- Última actualización
- hace 12 horas (20 de sep. de 2025)
- Categorías relacionadas
- Historial de versiones
- Añadir a la colección
Ayudar a este desarrollador
El desarrollador de esta extensión te pide le ayudes a seguir con el desarrollo haciendo una pequeña contribución.
Notas de prensa para 1.3.6
Version 1.3.6 (September 20, 2025)
Known Issues
Notes
- Fix issue with wake up button on sleeping pages. During browser restart, tab ids could be changed causing a mismatch.
Known Issues
- If Sleepy Tabs is reloaded in an open window, any sleeping page that is not discarded(unloaded) will be removed.
Notes
- If you have issues with sleeping pages specifically, try using the Discard Only setting. This unloads tabs normally without using a sleeping page.
- During Sleepy Tabs update, by clicking on the update notification it will discard all sleeping tabs to ensure they are safe for reload.
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1. Tab restoration can occasionally fail after browser crashes, restarts, or when the browser changes tab IDs internally.
2. We've implemented several safeguards to handle these edge cases, including:
- Primary UUID tracking instead of relying solely on tab IDs
- Restoring from original URL when ID/UUID matching fails
- Session storage backup for catastrophic recovery
Recent improvements:
- Completely redesigned tab tracking system using persistent UUIDs
- Restore button when tabinfo cant load.
- Better safeguards when something does go wrong.
- Session recovery
- Added comprehensive data management tools for troubleshooting
- Improved tab group handling and preservation
- Added side panel support for better tab management
The extension is fully open source and available at: https://gitlab.com/satoru8/sleepytabs