Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Reverse Image Search
Capture, Reverse Image Search is a powerful capturing reverse image search tool built on top of TinEye engine.
6,831 users
Undo Close Tab
Allows you to restore the last closed tab with just one button click and gives you access to the list of recently closed tabs in the button context menu.
30,267 users
Ecosia — The search engine that plants trees 🌱
Ecosia is a search engine that uses 80% of its profits from ad revenue to plant trees. By searching with Ecosia you can help the environment for free. This extension adds Ecosia.org as the default search engine to your Firefox browser. Give it a try!
322,399 users
Gesturefy
Customizable mouse gesture add-on, which supports over 60 different commands and additional features like rocker and wheel gestures.
116,180 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.
6,417 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.
42,725 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!)
16,766 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.
12,076 users
