SleepyTabs - Beautiful Tab Suspender by Sato

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

• 🔄 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:

1. Monitoring tab activity using browser events
2. Storing tab information in the browser's local storage
3. Replacing inactive tabs with lightweight placeholder pages
4. 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:

1. Clone the repository: git clone https://gitlab.com/satoru8/sleepytabs.git
2. Install dependencies:
3. Using Bun (recommended): bun i
4. Using npm: npm install
5. Run the extension:
6. Using Bun:
   • For development: bun run build
   • For production: bun run package
7. 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
8. 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