
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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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
Basic Controls
Tab Type Handling
Tab State Management
🎭 Appearance Customization
Themes
Choose from multiple themes:
- Dark (Default) - Easy on the eyes in low light
- Light - Clean and bright interface
- Midnight - Deep blue dark theme
- Sepia - Warm, paper-like appearance
- Solarized - Precision colors for multiple applications
- Nord - Arctic, north-bluish color palette
- Forest - Nature-inspired green theme
- Monokai - Popular code editor theme
- Ayu Dark - Clean, modern dark theme
- Amethyst - Purple-inspired theme
Wallpapers
Title Customization
⚙️ Advanced Settings
Performance
Behavior
📂 Data Management
⌨️ Keyboard Shortcuts
Technical Details
SleepyTabs is made for Firefox with support for Chrome. The extension 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.
📥 Installation
🤝 Contributing
Contributions are welcome! Feel free to submit issues or merge requests to help improve SleepyTabs.
📄 License
SleepyTabs is licensed under the GNU Affero General Public License v3.0 - see the LICENSE file for details.
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 10+ themes and wallpapers
- ⚙️ Granular Configuration - Fine-tune which tabs can sleep and when
- 🔒 Privacy Focused - Works entirely in your browser, no data sent externally
- 🌐 Sync Settings - Synchronize settings across multiple browsers
- 📦 Import/Export - Easily backup or transfer your settings
- 📊 Advanced Tab Management - Control behavior for pinned, grouped, and private tabs
- ⚡ Performance Optimizations - Batch processing and memory management
🛠️ Tab Management
Basic Controls
- Sleep Current Tab - Immediately put the current tab to sleep
- Sleep All Tabs - Put all eligible tabs to sleep at once
- Wake All Tabs - Restore all sleeping tabs with one click
Tab Type Handling
- Pinned Tabs - Control sleep behavior for pinned tabs
- Grouped Tabs - Manage sleep settings for tab groups
- Private Tabs - Special handling for private/incognito windows
- Reader Mode Tabs - Custom behavior for reader view tabs
Tab State Management
- Active Tabs - Option to sleep even the currently active tab
- Audible Tabs - Control whether playing audio prevents sleeping
- Loading Tabs - Prevent sleeping of tabs that are still loading
- Attention-Requesting Tabs - Handle tabs that want your attention
🎭 Appearance Customization
Themes
Choose from multiple themes:
- Dark (Default) - Easy on the eyes in low light
- Light - Clean and bright interface
- Midnight - Deep blue dark theme
- Sepia - Warm, paper-like appearance
- Solarized - Precision colors for multiple applications
- Nord - Arctic, north-bluish color palette
- Forest - Nature-inspired green theme
- Monokai - Popular code editor theme
- Ayu Dark - Clean, modern dark theme
- Amethyst - Purple-inspired theme
Wallpapers
- Enable custom wallpapers for sleeping tabs
- Set any image URL as wallpaper
- Adjust brightness to ensure text remains readable
Title Customization
- Add emoji prefixes to sleeping tabs
- Choose from preset emojis or set a custom prefix
- Options include: 💤 (Sleeping), 😴 (Sleep Face), 🛌 (In Bed), 🌙 (Moon), and more
⚙️ Advanced Settings
Performance
- Check Interval - How often to check for inactive tabs (default: 10s)
- Grace Period - Additional time before sleeping tabs after becoming inactive
- Batch Processing - Control how many tabs are processed at once
- Sleep Delay - Time between processing individual tabs
Behavior
- Discard Only - Just unload tabs without showing sleep page
- Auto-Restore - Automatically wake tabs when clicked
- Floating UI - Keep the popup interface always visible
📂 Data Management
- Caffeine List - Prevent specific sites from being put to sleep
- Settings Sync - Keep your preferences in sync across browsers
- Import/Export - Backup or transfer your configuration
- Reset Options - Restore default settings when needed
⌨️ Keyboard Shortcuts
- Sleep Current Tab:
Ctrl+Shift+1
- Sleep All Tabs:
Ctrl+Shift+2
- Wake All Tabs:
Ctrl+Shift+3
- Open SleepyTabs Sidebar:
Ctrl+Shift+4
- Wake Sleeping Tab:
Enter
(when focused on a sleeping tab)
Technical Details
SleepyTabs is made for Firefox with support for Chrome. The extension 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.
📥 Installation
🤝 Contributing
Contributions are welcome! Feel free to submit issues or merge requests to help improve SleepyTabs.
📄 License
SleepyTabs is licensed under the GNU Affero General Public License v3.0 - see the LICENSE file for details.
Rated 4,8 by 9 reviewers
Permissions and dataSaber mais
Permissões necessárias:
- Mostrar-lhe notificações
- Aceder aos separadores recentemente fechados
- Aceder aos separadores do navegador
Permissões opcionais:
- Aceder aos seus dados para todos os sites
Data collection:
- The developer says this extension doesn't require data collection.
Mais informação
- Ligações do extra
- Versão
- 1.4.5
- Tamanho
- 156,81 KB
- Última atualização
- há 2 dias (9 de out de 2025)
- Categorias relacionadas
- Histórico de versões
- Adicionar à coleção
O programador desta extensão pede que apoie o desenvolvimento da mesma através de um pequeno donativo.
Notas de lançamento para 1.4.5
Version 1.4.5 (October 8, 2025)
New Features:
- Add 'Show URL' to Appearance settings. Default is disabled.
Appearance:
- URLs/text/text highlight are now themed to match the selected color scheme
- Improved color accuracy across themes
Sessions:
- Overhaul SleepyTabs Sessions. Improve/optimize overall code for better maintainability & performance.
- Edit snapshots can now add new tabs to the snapshot, based on the tabs in the current window.
- Add X button to delete tags.
Bug Fixes:
- Fix some appearance settings not being set correctly when sleeping tab was unloaded.
Core Improvements:
- Reduced overall extension size by about 14%(before additions)
- Improve extension building process
- Various cleanup
Other:
- Update Screenshots on GitLab and AMO
Note: Wrapping up v1.4 updates here! Aside from bug fixes, we'll aim for less frequent, more substantial updates on a weekly/monthly basis. Questions or suggestions? Come chat on discord or drop by the gitlab.
New Features:
- Add 'Show URL' to Appearance settings. Default is disabled.
Appearance:
- URLs/text/text highlight are now themed to match the selected color scheme
- Improved color accuracy across themes
Sessions:
- Overhaul SleepyTabs Sessions. Improve/optimize overall code for better maintainability & performance.
- Edit snapshots can now add new tabs to the snapshot, based on the tabs in the current window.
- Add X button to delete tags.
Bug Fixes:
- Fix some appearance settings not being set correctly when sleeping tab was unloaded.
Core Improvements:
- Reduced overall extension size by about 14%(before additions)
- Improve extension building process
- Various cleanup
Other:
- Update Screenshots on GitLab and AMO
Note: Wrapping up v1.4 updates here! Aside from bug fixes, we'll aim for less frequent, more substantial updates on a weekly/monthly basis. Questions or suggestions? Come chat on discord or drop by the gitlab.
1. Tab restoration can occasionally fail after browser crashes, restarts, or when the browser changes tab IDs internally. Generally you will see a Restore Tab button and this will bring back the original tab.
The extension source is available at: https://gitlab.com/satoru8/sleepytabs