Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Black Menu for Google™
The easiest access to the Google universe
6,651 users
Tile Tabs WE
Take tabs from parent windows and arrange them in layouts of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll. Save and re-open layouts.
21,524 users
Textmarker
Highly customizable text highlighter with different colors and save option for later visits. Parts of the underlying WebExtensions API are not supported on Android and ESR.
7,692 users
Image Search Options
Image Search Options provides a set of highly customizable reverse image search context menu options.
48,550 users
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.
872,914 users
Gesturefy
Customizable mouse gesture add-on, which supports over 60 different commands and additional features like rocker and wheel gestures.
120,069 users
Clippings
Save frequently-entered text for pasting later.
37,489 users
Bookmarks Organizer
With the Bookmarks Organizer it's easy to put order in your bookmarks. The Bookmarks Organizer finds no longer working bookmarks, redirects, duplicates and more!
23,073 users
Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
511,409 users
Turn Off the Lights
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.
42,937 users
Iridium for YouTube
YouTube with more freedom
15,495 users
SoundFixer
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
16,473 users
Brief
Brief makes reading RSS feeds as easy and intuitive as it gets. Designed to have exactly the right set of features, it is powerful and simple at the same time. Feeds are presented on a seamless, interactive page which let's you bookmark and tag items with a single click.
12,458 users
RSSPreview
Preview RSS feeds in browser
4,306 users
Feed Preview
Indicates available RSS and Atom feeds and renders previews.
2,912 users
mPage
Simple dashboard-like RSS feed reader.
678 users