
UltimaDark - The Fastest Dark Mode Extension by ThomazPom
UltimaDark uses agressive & smart techniques to turn even the sunniest websites into realms of darkness. Although it works well, this is so experimental, it makes lab rats look like seasoned professionals. Go ahead, embrace the shadows! 🦇
1,582 Users1,582 Users
You'll need Firefox to use this extension
Extension Metadata
Permissions and dataLearn more
Required permissions:
- Clear recent browsing history, cookies, and related data
- Hide and show browser tabs
- Access browser tabs
- Access browser activity during navigation
- Access your data for all web sites
More information
- Add-on Links
- Version
- 1.6.13
- Size
- 769.32 kB
- Last updated
- 13 hours ago (6 Aug 2025)
- Related Categories
- Licence
- Mozilla Public Licence 2.0
- Version History
- Tags
- Add to collection
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