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Preview of UltimaDark - The Fastest Dark Mode Extension

UltimaDark - The Fastest Dark Mode Extension by ThomazPom

UltimaDark uses agressive and 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 (74 reviews)
1,680 Users
You'll need Firefox to use this extension
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Rated 4.5 by 74 reviewers

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Permissions and dataLearn more

Required permissions:

  • Clear recent browsing history, cookies, and related data
  • Access browser tabs
  • Access browser activity during navigation
  • Access your data for all web sites
More information
Version
1.6.24
Size
1.13 MB
Last updated
5 days ago (23 Aug 2025)
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