Version 1.3.6 (September 20, 2025)

• 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.

Version 1.3.5 (September 16, 2025)

• Show the update version number in the Update Notice.
• Some visual updates to the changelog page.
• Various updates to the wake up and restore tabs. Prefer UUID. As tabIds can change between sessions. (Will need to continue to ensure this works in all cases.)
• i18n updates. Current Locales, EN, ES, FR, CN, JP.
• Translations still need more work.

New Features

Discard Only

• New Advanced setting. If enabled, tabs will be discarded(unloaded) only, instead of using a sleeping page. This offers the same amount of resource savings without any appearance features.

Data Manager

• New feature, allows you to clear/delete specific extension data.
• If you've been using SleepyTabs for a month+. It might be a good idea to Wake All Tabs, then clear all data.

Other

Privacy
Added a privacy policy. You can find it here

Added the "data_collection_permissions": none, as per the firefox policy. Give it a read here

Notes
Thats about it for this one. Hopefully, we should be around 99% bug-free in terms of sleep/wake functionality. Feedback, bugs, issues, suggestions? Feel free to join the discord or drop a msg on the gitlab. Reviews always appreciated!

Version 1.3.1 (September 9, 2025)

• Change text 'minutes' to 'tabs' for the 'Suspension group size' & 'Maximum active tabs' setting.
• Various translation/text fixes

Version 1.3.0 (September 8, 2025)

• New setting "Suspension group size", this controls how many tabs are slept or woken up at a time.
• Sessions
• Sleepy Sessions is now out of experimental.
• This allows you to save and restore tabs/windows/snapshots across browser sessions.
• This uses the recently closed history for windows and tabs. 25 Tabs 5 windows.
• Various types of URLs are considered "restricted" by browsers. These are marked by the old SleepyTabs icon.
• You can restore these without issue in most cases. When restoring a snapshot, a custom page will show a link for you to copy.
• More features to come!
• Help Page
• Added Help link back to footer but this time it actually helps, maybe.
• Will continue to update this, feedback welcomed.
• Core/UI Improvements
• Added new "Sleep" tab. Splitting up the Advanced settings
• Various style improvments
• Slight refresh to settings import page
• Refactor and cleanup main popup/popout/sidebar code.
• Fixed some minor issues

Version 1.3.0 (September 8, 2025)

• New setting "Suspension group size", this controls how many tabs are slept or woken up at a time.
• Sessions
• Sleepy Sessions is now out of experimental.
• This allows you to save and restore tabs/windows/snapshots across browser sessions.
• This uses the recently closed history for windows and tabs. 25 Tabs 5 windows.
• Various types of URLs are considered "restricted" by browsers. These are marked by the old SleepyTabs icon.
• You can restore these without issue in most cases. When restoring a snapshot, a custom page will show a link for you to copy.
• More features to come!
• Help Page
• Added Help link back to footer but this time it actually helps, maybe.
• Will continue to update this, feedback welcomed.
• Core/UI Improvements
• Added new "Sleep" tab. Splitting up the Advanced settings
• Various style improvments
• Slight refresh to settings import page
• Refactor and cleanup main popup/popout/sidebar code.
• Fixed some minor issues

Version 1.2.21 (September 6, 2025)

• Fix bug introduced in recent update. Tab info was being removed on window close. Now it's only removed on tab close.

Version 1.2.20 (September 4, 2025)

• Change build process slightly, less agressive minifications
• Fix some minor issues

Version 1.2.18 (September 2, 2025)

• Add translations for update notice, oops.
• Change "Help" to "GitLab"
• Add Discord link to footer

New Features

• Screenshots
• Added screenshots to the appearance tab.
• When clicking on a tab while enabled it will save a screenshot of the tab to the sleeping tab info. This works only on the active tab.
• The screenshot will be displayed on the sleeping page.
• Sessions
• Added edit snapshots feature.
• Fix some issues with tags.

Core Improvements

• Sleeping Page "Close Tab" button on error is now Restore Tab. This will use the saved url from the current sleeping url to restore the tab.
• Various improvements to data storage.
• Better cleanup of unused or old resources.

Version 1.2.18 (September 2, 2025)

• Add translations for update notice, oops.
• Change "Help" to "GitLab"
• Add Discord link to footer

New Features

• Screenshots
• Added screenshots to the appearance tab.
• When clicking on a tab while enabled it will save a screenshot of the tab to the sleeping tab info. This works only on the active tab.
• The screenshot will be displayed on the sleeping page.
• Sessions
• Added edit snapshots feature.
• Fix some issues with tags.

Core Improvements

• Sleeping Page "Close Tab" button on error is now Restore Tab. This will use the saved url from the current sleeping url to restore the tab.
• Various improvements to data storage.
• Better cleanup of unused or old resources.

Version 1.2.17 (September 2, 2025)

• Change "Help" to "GitLab"
• Add Discord link to footer

New Features

• Screenshots
• Added screenshots to the appearance tab.
• When clicking on a tab while enabled it will save a screenshot of the tab to the sleeping tab info. This works only on the active tab.
• The screenshot will be displayed on the sleeping page.
• Sessions
• Added edit snapshots feature.
• Fix some issues with tags.

Core Improvements

• Sleeping Page "Close Tab" button on error is now Restore Tab. This will use the saved url from the current sleeping url to restore the tab.
• Various improvements to data storage.
• Better cleanup of unused or old resources.

Version 1.2.16 (September 2, 2025)

• Change "Help" to "GitLab"
• Add Discord link to footer

New Features

• Screenshots
• Added screenshots to the appearance tab.
• When clicking on a tab while enabled it will save a screenshot of the tab to the sleeping tab info. This works only on the active tab.
• The screenshot will be displayed on the sleeping page.
• Sessions
• Added edit snapshots feature.
• Fix some issues with tags.

Core Improvements

• Sleeping Page "Close Tab" button on error is now Restore Tab. This will use the saved url from the current sleeping url to restore the tab.
• Various improvements to data storage.
• Better cleanup of unused or old resources.

Version 1.2.10 (August 26, 2025)

Bug Fix

• Waking a tab only restores tab to original postion when waking from a Sleeping Group.

Version 1.2.9 (August 25, 2025)

New Features

• New icon!! The original icon is now used as the "Restricted URL" icon.
• Enable SidePanel in Chrome.
• Added sidepanel toggle to context menu
• Update Notifications
• This will hold the update until you click on the notification. After clicking the notification, it will resleep any current sleeping tabs to ensure they are properly discarded.
• Expermential Settings
• Added experimental settings toggle to Advanced menu.
• Enable experimental settings, a new Sessions link will appear in the footer.
• Sleepy Sessions
• SleepySessions allows you to save and restore tabs/windows/snapshots across browser sessions.
• Various types of URLs are considered "restricted" by browsers. These are marked by the old SleepyTabs icon.
• You can restore these without issue in most cases. When restoring a snapshot, a custom page will show a link for you to copy.

Core Improvements

• Cleanup polyfill, no bloat.
• Better debug logging.
• Continued code optimizations, cleanup, and bug fixes.

Version 1.2.9 (August 25, 2025)

New Features

• New icon!! The original icon is now used as the "Restricted URL" icon.
• Enable SidePanel in Chrome.
• Added sidepanel toggle to context menu
• Update Notifications
• This will hold the update until you click on the notification. After clicking the notification, it will resleep any current sleeping tabs to ensure they are properly discarded.
• Expermential Settings
• Added experimental settings toggle to Advanced menu.
• Enable experimental settings, a new Sessions link will appear in the footer.
• Sleepy Sessions
• SleepySessions allows you to save and restore tabs/windows/snapshots across browser sessions.
• Various types of URLs are considered "restricted" by browsers. These are marked by the old SleepyTabs icon.
• You can restore these without issue in most cases. When restoring a snapshot, a custom page will show a link for you to copy.

Core Improvements

• Cleanup polyfill, no bloat.
• Better debug logging.
• Continued code optimizations, cleanup, and bug fixes.

Update time! Some code cleanup, new feature and minor bug fixes. For now the Sleeping Groups are fairly basic. Ill expand on this in coming updates. Feedback always welcome. Easiest way is to open an issue on the gitlab.

Version 1.2.5 (August 16, 2025)

New Features

• Sleeping Tabs Groups
• New setting in Appearance, Use Groups. If enabled, tabs will be placed into a Sleeping group.
• Default group name and color can be set to customize the sleeping group.
• The setting uses the Group Name to find sleep/wake tabs. If the group name is changed, newly slept tabs will use the new group.

Bug Fixes

• Some minor UI changes.
• 'Float on Top' restyle.

Version 1.2.3

New Features

• Change Log Page
• Added a changelog page that shows on SleepyTabs updates.
• Can also access this in the footer next to the Help link, Release Notes.

Core Improvements

• SleepyTabs now re-discards sleeping tabs that were loaded but not yet awakened
• UUID now based on the tab's specifc URL.
• Moved theme settings and wake times into tabInfo config.

Bug Fixes

• Padding on tabs
• Float on Top in popup
• Popout width

Version 1.2.1

• Bug Fixes:
• Fix 'Wake Up' on Sleeping page from restoring correct url on wrong tab after browser restart.

Version 1.2.0

New Features

• Reader Mode Support
• Added dedicated Reader Mode settings
• Control whether Reader Mode tabs can be put to sleep or woken up
• Maximum Active Tabs
• Set a limit for how many recently used tabs should remain active
• Based on tab's last access time
• Setting to 0 disables this feature
• Example: Setting to 2 will keep your 2 most recently used tabs awake

Enhanced Tab Settings

• Split controls for different tab types into separate sleep/wake options:
• Pinned tabs
• Grouped tabs
• Private browsing tabs
• Reader Mode tabs

UI Improvements

• Updated styles and overall user interface
• More intuitive settings organization

Translation System

• Switched to TOML format for translations (en.toml, fr.toml)
• For Contributors:
• To add a new language, copy en.toml, rename to your locale code, and translate
• TOML files automatically generate JSON on build
• Added translation verification tools:
  To check for missing or unused translations:
• bun run build
• bun run i18n:scan
• Bug Fixes:
• "Wake All Tabs" now correctly respects the current window setting when enabled

Version 1.2.0

New Features

• Reader Mode Support
• Added dedicated Reader Mode settings
• Control whether Reader Mode tabs can be put to sleep or woken up
• Maximum Active Tabs
• Set a limit for how many recently used tabs should remain active
• Based on tab's last access time
• Setting to 0 disables this feature
• Example: Setting to 2 will keep your 2 most recently used tabs awake

Enhanced Tab Settings

• Split controls for different tab types into separate sleep/wake options:
• Pinned tabs
• Grouped tabs
• Private browsing tabs
• Reader Mode tabs

UI Improvements

• Updated styles and overall user interface
• More intuitive settings organization

Translation System

• Switched to TOML format for translations (en.toml, fr.toml)
• For Contributors:
• To add a new language, copy en.toml, rename to your locale code, and translate
• TOML files automatically generate JSON on build
• Added translation verification tools:
  To check for missing or unused translations:
• bun run build
• bun run i18n:scan
• Bug Fixes:
• "Wake All Tabs" now correctly respects the current window setting when enabled

v1.1.5
• Fix Wake All Tabs

v1.1.4
• Add User Settings title
• Improved tab tracking with unique identifiers
• Fixed issues with tab information persistence
• Enhanced reliability when restoring tabs after browser restarts or crashes
• Better handling of tab information across browser sessions

• Add User Settings title
• Improved tab tracking with unique identifiers
• Fixed issues with tab information persistence
• Enhanced reliability when restoring tabs after browser restarts or crashes
• Better handling of tab information across browser sessions

Removed some extension permissions.
Better tab history preservation.
Better URL handling on sleep/wake.
Optimize the Import Settings page.

Slept tabs will use their FavIcons instead of SleepyTabs icon
Title Prefix added to appearance section. Able to set custom emoji or text instead of default Sleeping: URL
Current prefix default is the ZZZ emoji.
Added SideBar. Default hotkey is Ctrl + Shift + 4, or use the button in the sidebar panel
Added context menu item, "Add to SleepyTabs Whitelist". Adds the exact URL to Whitelist

Add localization. Current - EN, FR
Add 'Sleep tabs in current window' // SleepAllTabs will sleep only in current window. Popup only.
Possible better memory savings when sleeping
Optimize some code

Fix for SleepAllTabs btn and whitelist

Import/Export/Reset User Settings Buttons
Added Nord theme
Added option for settings to sync to profile, off by default
Added support fom Chrome browsers
Hotkeys:
- Put tabs to sleep with Ctrl+Shift+1
- Sleep all tabs with Ctrl+Shift+2
- Wake all tabs with Ctrl+Shift+3
Change these in your browsers extension settings page

Basic support for waking specific types of tabs(newtab, etc)
Fix tab tracking when multiple windows are open and using popout mode

Update default whitelist
Update Readme
Slight design changes for popup
Fix issue with checkboxes
Add Advanced tab/Settings page to popup
New Advanced settings
Check Interval
Grace Period
Sleep ActiveTabs
Sleep AudibleTabs
Sleep PrivateTabs
Sleep LoadingTabs
Sleep AttentionTabs

Accessibility
Various bug fixes
Restyle popup to use tabs for General/Appearance
Some style style changes for sleeping page
Better popup light theme styles
Fix light/dark theme for popup based on system theme
Add gracePeriod, checkInterval to defaultConfig
Set default config settings on first load/install, rather than first 'use'