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Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
See all extensions
Create a Firefox account to sync across devices
Create a Firefox account to sync across devices
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Privacy beyond browser extensions
Privacy beyond browser extensions
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Media enhancers for Firefox
Media enhancers for Firefox
Explore extensions
Recommended extensions
  • Forecastfox (fix version)

    Forecastfox (fix version)

    Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.

    41 139 brukere

  • EPUBReader

    EPUBReader

    Read ePub files right in Firefox. No additional software needed!

    169 049 brukere

  • Default Bookmark Folder

    Default Bookmark Folder

    Allows you to choose the default bookmark location folder and quickly bookmark pages via a dedicated icon.

    29 405 brukere

  • Webmail Ad Blocker

    Webmail Ad Blocker

    Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

    38 867 brukere

Popular themes
Enhanced privacy extensions
  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

    Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.

    1 440 692 brukere

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    888 665 brukere

  • Decentraleyes

    Decentraleyes

    Beskytter mot sporing gjort av "gratis" sentralisert innholdslevering. Den hindrer mange forespørsler fra å nå nettverk som Google Hosted Libraries, og tilbyr lokale filer for å avverge rotede nettsteder. Bistår vanlige innholdsblokkerere.

    249 307 brukere

  • Facebook Container

    Facebook Container

    Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

    979 154 brukere

Popular extensions
  • uBlock Origin

    uBlock Origin

    Finally, an efficient blocker. Easy on CPU and memory.

    5 373 547 brukere

  • Video DownloadHelper

    Video DownloadHelper

    The easy way to download and convert Web videos from hundreds of YouTube-like sites.

    2 785 741 brukere

  • NoScript Security Suite

    NoScript Security Suite

    The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.

    1 670 108 brukere

  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

    Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.

    1 440 692 brukere

Recommended themes
Recommended password managers
  • LastPass Password Manager

    LastPass Password Manager

    LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

    956 367 brukere

  • Bitwarden — Fri passordbehandling

    Bitwarden — Fri passordbehandling

    En sikker og fri passordbehandler for alle dine PCer og mobiler

    173 847 brukere

  • 1Password X – Password Manager

    1Password X – Password Manager

    The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.

    74 617 brukere

  • RoboForm Password Manager

    RoboForm Password Manager

    RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically

    91 320 brukere