Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Font Finder (revived)
An easy-to-use font inspector to get CSS styles of the selected element
22,104 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
19,648 users
Forget Me Not - Forget cookies & other data
Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.
12,749 users
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
25,741 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14,349 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1,344 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
1,713 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
953 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.
45,919 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
11,433 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4,175 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.
392 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).
10,954,609 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,813,283 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,085,979 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,288,380 users