Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Mute Tab (WebExtension)
Easily mute all tabs with just one click!
6,220 users
AdBlock for Firefox
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
1,330,718 users
Image Search Options
Image Search Options provides a set of highly customizable reverse image search context menu options.
55,972 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!)
4,368 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14,999 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1,423 users
Latest BBC News
Displays latest BBC News in a popup widget Get all the latest BBC News headlines with a single click. Opens a popup widget with the latest news headlines. Quick access to Business Health Science & Environment Technology Entertainment
1,778 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
1,008 users
Forecastfox (fix version)
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
47,064 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
11,859 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4,321 users
Toolbar Weather
This extension shows in your toolbar the current weather and the degree in Celsius, when you click is possible see more details about the weather on your city. In addition to being able to view the forecast for the next 24 and 48 hours.
416 users
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).
11,223,326 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,932,608 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,151,066 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,350,955 users