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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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Review by dethknite
by dethknite, 4 months ago
57 reviews
  • by kzs, 6 days 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 17715939, 9 days ago
    Would love to be able to blacklist sites to not run this (Gmail behaves funky when this is enabled, I'm sure there are more sites that I'll run into the future)

    Other than that it works great.

    Developer response

    posted 9 days ago
    https://support.mozilla.org/en-US/kb/extensions-button

    A major user interface overhaul is coming soon! In the meantime, the current UI already allows you to exclude sites from being darkened. If you don’t see the extension’s button pinned in your toolbar, it might still be hidden under the puzzle piece (🧩) menu, where newly installed extensions are grouped
  • by Uriy, 10 days ago
  • by Firefox user 18805902, 11 days 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 11 days 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, 25 days ago
    I thought I would never use dark mode on browsers due to their performance hit. Then I found this.
  • by Chitauri, a month ago
  • by gbpu, a month ago
  • by ikemen, a month ago
  • by Firefox user 10031114, 2 months ago
    Dark reader:
    This add-on needs to:
    Access browser tabs
    Access your data for all websites
    UltimaDark:
    This add-on needs to:
    Clear recent browsing history, cookies, and related data
    Access browser tabs
    Store unlimited amount of client-side data
    Access browser activity during navigation
    Access your data for all websites

    Indeed fast :) but a lot of permissions needed
    works well on telegraaf.nl , better then dark reader.

    Developer response

    posted 2 months ago
    Each permission in UltimaDark is added only when absolutely necessary and is used in the most minimal way possible. Browsing history and cookies remains untouched. Clearing the cache is done on key moments (such as updating settings ) specifically to prevent loading unedited resources, ensuring consistent dark mode application across websites.

    While UltimaDark might perform better than other tools, such as Dark Reader, on certain websites (e.g., telegraaf.nl), it’s worth noting that Dark Reader is developed by a team of over 40 developers and more than 1300 contributors, whereas UltimaDark is free and still the result of a solo effort.
  • by Firefox user 18678457, 2 months ago
  • by Lunkan, 2 months ago
  • by Firefox user 12320282, 2 months ago
  • by Firefox user 13812176, 2 months ago
  • by Firefox user 18726046, 2 months ago
    My initial use found that my Proton Pass was rendered useless by the plugin. The dev fixed that with v1.6.11 -- LOVE this plugin now.

    Developer response

    posted 2 months ago
    Fixed in 1.6.11
  • by Firefox user 18725287, 2 months ago
    Good
  • by shadows552, 2 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 2 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 VOIIIXI, 2 months ago
    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.

    Developer response

    posted 2 months ago
    Thank you for your report ! UltimaDark does not aim to compare itself to Dark Reader or any other tool. Please keep in mind that UltimaDark is a young, free project, and by nature, it will never be “finished.” Bugs are inevitable since fixing an issue for one site may break functionality for others, especially with only one developer working on it.

    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 sjuul, 2 months ago
    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.
  • by Firefox user 16391695, 2 months ago
    After several other dark mode extensions that haven't worked correctly... I found this one. WORKS FLAWLESSLY! Thank you for this great extension.
  • by Mushrooms, 3 months ago
    Noticeably fast easily the Best Performance for a Dark Mode Add-on, it's definitely experimental and requires difficult development, I'm using Fennec on Android and I'm encountering a bad visual bug if attempting to reusing the search bar on brave if java script isn't disabled. Other then a few websites most other visual bugs are minor and this add-on is very usable even on it current version, of course further development is much appreciated, Thank you ThomazPom!!
  • by Gasmasko, 3 months ago
    I thought it was better than Dark Reader, but after the latest update it's giving errors on some pages like Facebook or Instagram when the page reloads after logging in.

    Edit: I edited my review because the extension has good support and attention from the developer.

    Developer response

    posted 3 months ago
    Thank you for bringing this to our attention. The issue affecting these sites was caused by an update aimed at enhancing the support for more websites. It was an unintended mistake, not a fundamental bug. We’re addressing it, and a fix has been released in version 1.6.6. If you encounter any further issues, please report them here: https://github.com/ThomazPom/Moz-Ext-UltimaDark/issues
  • by Firefox user 18361958, 3 months ago
  • by retarded, 3 months ago
  • by Nixe, 4 months ago
    I love this addon but it would be great if there were more customization options. A few websites that I use do not work completely with the addon turned on. Ofc excluding these websites from loading the addon works but I think that it could be improved so the whole website wouldn't suddenly turn black. <3
  • by Firefox user 18294836, 4 months ago
    I just change my star rating to 5. The latest update really good, it fixes a issue that a lot of sites become dark and unusable✨
    ---
    Everything is working as expect. But there is a bug in some sites changing all text to unreadable letter.
    I think HTML filtering is the cause.