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Reviews for UltimaDark - The Fastest Dark Mode Extension

UltimaDark - The Fastest Dark Mode Extension by ThomazPom

4.5 Stars out of 5
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51 reviews
  • by Firefox user 14181739, 2 days ago
    I've used a few different dark mode extensions over the years, but UltimaDark is FAST! Not only is it fast, but it handles websites with progressively loading content far better than even the fabled Dark Reader.
  • by CTW, 3 days ago
    I'm really glad to see this excellent extension getting an update! For me, one of the biggest hurdles in moving away from Chrome-based browsers has been finding a good dark mode solution. This extension has great potential to remove that hurdle, which is why it's the one I care about the most. The updated modern UI looks fantastic, and I hope more people will discover how great this extension is.
  • by DaemonCipher, 3 days ago
    The GOAT dark mode extension has been updated! Thank you for your hard work ThomazPom! Seems to work so much better than before.
  • by Firefox user 19239852, 3 days ago
    After new update, add-on doesn't work anymore. Fix this please!

    Update: After deleting and installing the add-on, everything works now fine so five stars again!

    Developer response

    posted 3 days ago
    Please report your issue here and I'll be able to take a look at your exact case
    https://github.com/ThomazPom/Moz-Ext-UltimaDark/issues
  • by John Albert, 5 days ago
    Just discovered this extension and really surprised at how its even faster than chromium in rendering dark mode! However, I see there hasn't been any new updates this year. Really hope you don't abandon this awesome project!

    Developer response

    posted 5 days ago
    I’ve been back on UltimaDark development for a few days, and the new modern UI and feature improvements in the upcoming release are already significant.
  • by Firefox user 16356045, 11 days ago
  • by chewygum, 19 days ago
  • by emvaized, 3 months ago
    Great addon! Would be awesome if you could apply dark mode per window, so that I can keep the window on the main monitor with light theme, and apply dark mode for websites only on a secondary monitor.
  • by isuru, 3 months ago
    Oh goodness, finally, a dark mode extension that works well enough and does not destroy my device. Thank you. We can deal with the bugs, please keep developing <3 (and yes its seriously fast)

    Developer response

    posted 3 months ago
    I’m still working on it. I’m in a pause but next update will fix more bugs and bring new ui
  • by geekzilla101, 4 months ago
  • by Katharta, 5 months ago
  • by yadada, 6 months ago
    super fast
  • by Firefox user 17715939, 6 months 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 6 months 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, 6 months ago
  • by Chitauri, 7 months ago
  • by gbpu, 7 months ago
  • by ikemen, 7 months ago
  • by Firefox user 10031114, 7 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 7 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, 8 months ago
  • by Lunkan, 8 months ago
  • by Firefox user 12320282, 8 months ago
  • by Firefox user 13812176, 8 months ago
  • by Firefox user 18726046, 8 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 8 months ago
    Fixed in 1.6.11
  • by Firefox user 18725287, 8 months ago
    Good
  • by sjuul, 8 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.