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Featured extensions
FoxyProxy Standard
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
173,421 users
Reverse Image Search
Capture, Reverse Image Search is a powerful capturing reverse image search tool built on top of TinEye engine.
9,759 users
Decentraleyes
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
100,716 users
Turn Off the Lights for YouTube™ and Beyond
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube™ and Beyond. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, Hulu, Metacafe, YouKu, etc.
48,227 users
Popular extensions
Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
13,309,154 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,960,998 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,503,705 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,344,931 users
Top-rated Themes
Productivity tools
Grammarly for Firefox
Grammarly will help you communicate more effectively. As you type, Grammarly flags mistakes and helps you make sure your messages, documents, and social media posts are clear, mistake-free, and impactful.
609,028 users
Gesturefy
Customizable mouse gesture addon, which supports over 40 different actions.
96,432 users
OneNote Web Clipper
Save anything on the web to OneNote. Clip it to OneNote, organize and edit it, then access it from any device.
56,972 users
Snap Links Plus
Select a number of links with a rectangle and open them all in new tabs in the same or a new window(s), download them or copy them to the clipboard. You can also lasso checkboxes to quickly check or uncheck them.
24,057 users
Privacy protection
Ghostery
See who’s tracking you online and protect your privacy with Ghostery.
1,049,824 users
Privacy Badger
Protects your privacy by blocking spying ads and invisible trackers.
411,607 users
Disconnect
Make the web faster, more private, and more secure.
225,655 users
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
63,831 users