To use these add-ons, you'll need to download Firefox.

Log in
BY FIREFOX

Mozilla VPN Extension

You’re in control. Turn off VPN when a website won’t work and set different locations for different websites. Windows only.
Get the extension

Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
See all extensions
Productivity tools
Productivity tools
See staff picks
YouTube customization
YouTube customization
See staff picks
Privacy & Security extensions
Privacy & Security extensions
See staff picks
Recommended extensions
  • SingleFile

    SingleFile

    Save an entire web page—including images and styling—as a single HTML file.

    gildas

    67,900 users

  • Zoom Page WE

    Zoom Page WE

    Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom and minimum font size. Fit-to-width zooming can be applied to pages automatically. Fit-to-window scaling can be applied to small images.

    DW-dev

    24,657 users

  • User-Agent Switcher and Manager

    User-Agent Switcher and Manager

    Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.

    Ray

    95,649 users

  • AdBlocker for YouTube™

    AdBlocker for YouTube™

    Remove all annoying ads from YouTube.

    AdblockLite

    522,549 users

Top rated themes
Tab managers
  • Tabby - Window & Tab Manager

    Tabby - Window & Tab Manager

    Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!

    BillK

    22,702 users

  • Tree Style Tab

    Tree Style Tab

    Show tabs like a tree.

    Piro (piro_or)

    217,492 users

  • Simple Tab Groups

    Simple Tab Groups

    Create, modify, and quickly change tab groups

    Drive4ik

    101,528 users

  • OneTab

    OneTab

    OneTab - Too many tabs? Convert tabs to a list and reduce browser memory

    OneTab Team

    170,328 users

Popular extensions
  • uBlock Origin

    uBlock Origin

    Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.

    Raymond Hill

    9,587,857 users

  • Video DownloadHelper

    Video DownloadHelper

    Download videos from the web. Easy, smart, no tracking.

    mig

    1,907,707 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    EFF Technologists

    1,874,363 users

  • AdGuard AdBlocker

    AdGuard AdBlocker

    Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.

    Adguard Software Ltd

    1,396,614 users

Recommended themes
Twitch extensions
  • BetterTTV

    BetterTTV

    Enhances Twitch and YouTube with new features, emotes, and more.

    NightDev

    489,794 users

  • Alternate Player for Twitch.tv

    Alternate Player for Twitch.tv

    Alternate player of live broadcasts for Twitch.tv website.

    Alexander Choporov (CoolCmd)

    36,251 users

  • Twitch Chat pronouns

    Twitch Chat pronouns

    Add Pronouns to Twitch Chat

    Alejo Pereyra

    16,065 users

  • Unwanted Twitch

    Unwanted Twitch

    Hide unwanted streams, games, categories, channels and tags on: twitch.tv

    kwaschny.net

    5,845 users

“google” tagged extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    Dmitry Selivanov

    884,282 users

  • To Google Translate

    To Google Translate

    Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.

    Juan Escobar

    866,783 users

  • TWP - Translate Web Pages

    TWP - Translate Web Pages

    Translate your page in real time using Google, Bing or Yandex. It is not necessary to open new tabs.

    Filipe Dev

    636,249 users

  • Search by Image

    Search by Image

    A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.

    Armin Sebastian

    401,587 users

Change the way Firefox looks with themes.

Change the way Firefox looks with themes.