Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Reader
Reader is the ultimate Reader tool for Firefox.
21,353 users
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
14,148 users
Gesturefy
Customizable mouse gesture add-on, which supports over 60 different commands and additional features like rocker and wheel gestures.
118,614 users
Emoji Cheatsheet
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook. Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
62,300 users
Gesturefy
Customizable mouse gesture add-on, which supports over 60 different commands and additional features like rocker and wheel gestures.
118,614 users
Clippings
Save frequently-entered text for pasting later.
36,350 users
Tomato Clock
Tomato Clock is a simple browser extension for managing your productivity.
15,192 users
Impulse Blocker
Block distracting websites when you are browsing the web. You can list websites that you don't want to visit in the settings. You can pause or turn off the blocker quickly. Completely open source.
6,101 users
Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
507,417 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.
42,812 users
Iridium for YouTube
YouTube with more freedom
15,317 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!)
16,528 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.
12,299 users
RSSPreview
Preview RSS feeds in browser
4,418 users
Feed Preview
Indicates available RSS and Atom feeds and renders previews.
2,909 users
mPage
Simple dashboard-like RSS feed reader.
684 users