Duplicate Tabs Cleaner by Denis Oparin
Removes duplicate tabs.
Extension Metadata
About this extension
Duplicate Tabs Cleaner removes duplicate tabs after Firefox startup.
The extension:
* checks all open tabs 3 seconds after startup;
* considers tabs duplicates when they have the same URL and the same Firefox container;
* keeps tabs with the same URL if they belong to different containers;
* closes duplicate tabs and keeps the first occurrence.
No account or website login is required for testing.
The extension:
* checks all open tabs 3 seconds after startup;
* considers tabs duplicates when they have the same URL and the same Firefox container;
* keeps tabs with the same URL if they belong to different containers;
* closes duplicate tabs and keeps the first occurrence.
No account or website login is required for testing.
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Permissions and data
Required permissions:
- Access browser tabs
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.3
- Size
- 8.05 KB
- Last updated
- 5 days ago (Oct 7, 2026)
- Related Categories
- License
- MIT License
- Version History
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