To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Firefox for Android extensions

Personalize Firefox for Android with powerful extensions.

Recommended extensions
  • Stylus

    Stylus

    Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.

    98,900 users

  • YouTube High Definition

    YouTube High Definition

    YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.

    162,744 users

  • Dark Reader

    Dark Reader

    Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.

    1,159,485 users

  • Web Archives

    Web Archives

    View archived and cached versions of web pages on 10+ search engines, such as the Wayback Machine, Archive․is, Google, Bing and Yandex

    57,423 users

Explore all Android extensions
  • WebX Video Downloader

    WebX Video Downloader

    WebX Video Downloader is your ultimate companion for capturing and saving videos from your favorite websites.

    256 users

  • Adblock - 1Block

    Adblock - 1Block

    Powerful Ad Blocking, Privacy Protection, Faster Browsing, User-Friendly, and Lightweight.

    264 users

  • Facebook Video Downloader

    Facebook Video Downloader

    Download Facebook videos easily.

    394 users

  • Unlock Medium article

    Unlock Medium article

    Opens current Medium Article in Freedium, unlocking the article.

    141 users

  • IP Whois

    IP Whois

    View info about IP, DNS records, SSL, country flag, domain whois, location, stats and more of any website.

    471 users

  • Lightweight X (formerly Twitter)

    Lightweight X (formerly Twitter)

    Lightweight of X (formerly Twitter) which is very heavy in Firefox.

    298 users

  • Internet Speed

    Internet Speed

    This cool extension provides a quick, accurate, and aesthetically pleasing way to know your internet speed & status.

    511 users

  • VirusTotal Website Security Check

    VirusTotal Website Security Check

    Automatically opens a VirusTotal website scan page on the URL you are visiting right now, in just a click of a button.

    606 users