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Reviews for UltimaDark - The Fastest Dark Mode Extension

UltimaDark - The Fastest Dark Mode Extension by ThomazPom

4.6 Stars out of 5
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12 reviews
  • by kzs, 2 months ago
    Much faster than Dark Reader—the difference in performance is unreal. Dark Reader was really slowing down browser performance by about 70%. However, some features are somewhat broken, and it lacks some features found in Dark Reader. Website exclusion doesn't work on IP:port websites, and sometimes I get a broken half-dark, half-light theme that requires disabling and re-enabling UltimaDark, then refreshing the page to fix it. Additionally, you can't disable it on all websites by default and just enable manually on light websites like you can with Dark Reader
  • by Firefox user 18805902, 2 months ago
    Is it possible to set dark mode to automatic based on the ligh/dark theme on my phone? I cant find it..

    Developer response

    posted 2 months ago
    The Android version of UltimaDark is available primarily to satisfy a few users, but it is not actively tested. However, since it is identical to the browser version, it inherits bug fixes and new features automatically. While we’re happy to hear that some users have it working, please remember that UltimaDark remains a highly niche and experimental project, so your experience may vary.

    That said, detection of the system night mode on desktop is already planned. If Android Firefox shares dark theme information with web extensions as Firefox Desktop does—which is very probably the case—then the Android version should inherit this functionality once implemented, with a bit of luck.

    Thanks for your understanding and support!
  • by Cooper, 2 months ago
    I thought I would never use dark mode on browsers due to their performance hit. Then I found this.
  • by shadows552, 4 months ago
    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).

    Developer response

    posted 4 months ago
    Thank you for your report !

    The extension is still experimental and constantly evolving. To report bugs, share ideas, or track progress, the project’s GitHub page is available. Anyone who wants to be part of the growing community around this project is warmly welcome. Thank you for your patience and support!
  • by sloan, 6 months ago
  • by Whatzit Tooya, 6 months ago
    It works great, but too heavy on my browser :(
  • by ykjoy, 7 months ago
  • by jojojo, 7 months ago
  • by gsak3l, 7 months ago
  • by ktpttd, a year ago
    Truely fastest dark mode!. But I give 4 stars because dark mode is sometime not applied in case: back to previous page, some websites

    Developer response

    posted 4 months ago
    This specific issue has been fixed
  • by Firefox user 13574693, 2 years ago
    if it handles accented letters and vharacters it'll get thwe 5 star! well done mate. Would be the best if those are okay. :) keep up!

    Developer response

    posted a year ago
    This is a very rare bug occuring on less than 1% of visited websites. I'm currently tracking it down and refreshing the webpage is enough to fix it. Please keep in mind how much UltimaDark is experimental
  • by ForeFix, 5 years ago
    It seems to work well, with good performance overall, but it indeed breaks some websites. That why it needs a exceptions list feature (if possible with smart segments of url, like: whitelisting .example.com' , 'example.com/subcategorypages' or "subdomainonly.example.com' ), and maybe for later, alternative methods to darken the pages (simple inverse filter, CSS) if the main one doesn't work as expected.
    Also, it'd be cool to let the browser highlight with a different color visited links.

    Encouragement to the dev!

    Developer response

    posted 5 years ago
    Hi ForeFIx, i added the exceptions list feature, you may want to check the latest version :)
    I still don't know yet if i will add alternative methods to darken pages because the very first idea of this addon was to calc a true dark mode for each website (the opposite of setting defaults values or inverting the whole website); but i may change my mind
    It still breaks some websites as the code is still experimental