UltimaDark - The Fastest Dark Mode Extension
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! 🦇
Total ratings
4.58
(Rating count:
48)Review summary
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Fast performance compared to other dark mode extensions
- Sufficient dark mode quality for most websites
- Works well on mobile (e.g., Fennec on Android)
- Good support and attention from the developer
Cons
- Incorrect darkening of some elements and images
- Custom exclusion of websites doesn't work consistently
- Causes errors on popular sites like Facebook and Instagram
- Can be heavy on browser resources
Most mentioned
- Fast performance
- Incorrectly darkened elements
- Need for more customization options
- Errors on certain webpages
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User reviews
Recent rating average:
4.40
All time rating average:
4.58
Upgrade to see all 52 reviews
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| Date | Author | Rating | Comment |
|---|---|---|---|
| 2024-12-17 | Firefox user 18678457 | | |
| 2024-12-17 | Lunkan | | |
| 2024-12-16 | Firefox user 12320282 | | |
| 2024-12-15 | Firefox user 13812176 | | |
| 2024-12-11 | Firefox user 18726046 | | It kind of works. Then, it killed my Proton Pass. So I remove this addon, I guess no dark mode on Firefox. |
| 2024-12-10 | Firefox user 18725287 | | Good |
| 2024-12-08 | shadows552 | | Fast performance and pretty universal darkening. However, some elements may be incorrectly darkened or look funky (for example, one note writing on web). Also, excluding websites doesn't seem to work (or at least work consistently). |
| 2024-12-06 | VOIIIXI | | Better performance than Dark Reader but not as good. Lots of pages incorrectly darkened, images too, Google search is the biggest example. It definitely needs more work. |
| 2024-12-05 | sjuul | | Dark Reader might have best dark mode, but it too often slows loading of websites to a crawl, making it unusable. Thankfully there is this addon as a repacement. Dark mode quality of UltimaDark is certainly sufficient and websites load fast with it. So glad I found it. Especially since the rest of dark mode addons seem abandoned. So thank you so very much ThomazPom for this great addon. |
| 2024-12-01 | Firefox user 16391695 | | After several other dark mode extensions that haven't worked correctly... I found this one. WORKS FLAWLESSLY! Thank you for this great extension. |
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