Desktop web browsers have long supported add-ons and extensions that change the user interface, add features, or otherwise change the behavior of the browser. But it’s more rare to find a mobile browser with support for third-party add-ons.

Firefox is one of the exceptions. Firefox for Android first added support for add-ons in 2011, but when Mozilla redesigned its mobile browser in 2020, it lost support for many of those older add-ons. Now Mozilla says add-ons are coming back, in a big way.

Starting December 14, Mozilla says that more than 400 more add-ons will be available to install on Firefox’s web browser for Android phones, tablets, and other devices.

Not all Firefox add-ons available from addons.mozilla.org will work with the mobile browser. But any extension marked as Android compatible should work, and if you want to browse a subset of compatible extensions, there’s a new page for that.

Some popular extensions that are already available, include ad blockers like uBlock Origin, Ghostery, and AdGuard, password managers like Bitwarden, and other tools that do things like read text aloud to you, enable multi-site reverse image searches, or force YouTube videos to play in high definition.

But at the moment there are only a few dozen add-ons available, and that list is going to grow a lot longer in the next few weeks.

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  1. Addons are great an all… but android firefox is still crap on a tablet due to the lack of a tab bar. an issue they have ignored fixing for years.

    1. +1
      Firefox is a nerd nest. Users and usability are a nuisance they have to occasionally deal with.

  2. I’d probably be using a Chrome based “Brave” Browser right now if it weren’t for Gecko.

  3. Better late than never!

    I’ve been using Iceraven for the past year or two, which is basically just Firefox for Android with addons enabled and some other annoyances fixed, but maybe I’ll switch back to Firefox soon.

  4. Well, I only use uBlock Origin, I even haven’t got Youtube app, I use the browser one exactly because of this, within the app Google controls you much more. Adless world is a must, otherwise I wouldn’t be using Youtube at all.

    1. Because Mozilla, for a long time now, has been spending more money on social justice causes than software development…

          1. Holy…. I’ve heard rumors about this but never looked into it, disturbing stuff. Always scary to think about all of the mystery groups out there that receive millions of dollars from large corporations in order to influence the public. Information Warfare all around us. IT at my work place allows us a choice of 3 browsers, Microsoft Edge, Google Chrome, and Firefox.. guess which one I’ve been using the last 10 plus years thinking it’s the lesser of 3 evils… smh.

          2. Unless I’m reading that very wrong, it shows in 2021 at most $375,000 went to social justice causes, compared to $199,189,000 spent on software development. It’s also no clear that all of that $375,000 is for social justice, but if we say it is then Mozilla spent 531 times as much on software development as it did on social justice.