Log in
Preview of UltimaDark - The Fastest Dark Mode Extension

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! 🦇

4.5 (71 reviews)
1,582 Users
You'll need Firefox to use this extension
Download Firefox
Download file
Screenshots
Rated 4.5 by 71 reviewers
Click to rate:

Star rating saved

5
50
4
14
3
4
2
1
1
2
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
Report this add-on
More extensions by ThomazPom