Extensions are like apps for your browser.

They add features to Firefox to make browsing faster, smarter, or just plain fun.

Recommended extensions
  • HTTPS Everywhere

    HTTPS Everywhere

    Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

    677 464 brukere

  • Don't touch my tabs! (rel=noopener)

    Don't touch my tabs! (rel=noopener)

    Prevent tabs opened by a hyperlink from hijacking the previous tab by adding the rel=noopener attribute to all hyperlinks (excluding same-domain hyperlinks).

    10 201 brukere

  • YouTube High Definition

    YouTube High Definition

    YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

    144 600 brukere

  • AdBlocker Ultimate

    AdBlocker Ultimate

    Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!

    622 200 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.

    1 270 902 brukere

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    762 415 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.

    215 178 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.

    784 311 brukere

Popular extensions
  • uBlock Origin

    uBlock Origin

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

    5 069 051 brukere

  • NoScript Security Suite

    NoScript Security Suite

    The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS other web security exploits. Disabled and can't reinstall? https://tinyurl.com/moz-ext-cert

    1 581 952 brukere

  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

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

    1 270 902 brukere

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    762 415 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.

    900 552 brukere

  • Bitwarden — Fri passordbehandling

    Bitwarden — Fri passordbehandling

    En sikker og fri passordbehandler for alle dine PCer og mobiler

    140 815 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.

    57 005 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

    88 173 brukere