Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Resurrect Pages
Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...
10,724 users
ReloadMatic: Automatic Tab Refresh
ReloadMatic automates the periodic reloading / refreshing of browser tabs. It offers cache control, custom intervals, POST support and many other features. It also integrates with browser features such as tab restore, pinning, and incognito mode.
29,270 users
Behind The Overlay Revival
Click to close any overlay popup on any website.
16,837 users
Imagus
Enlarge thumbnails, and show images/videos from links with a mouse hover.
74,154 users
Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
505,592 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!)
13,267 users
YouTube High Definition
YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
199,897 users
Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
31,353 users
Wikiwand: Wikipedia Modernized
Good old Wikipedia gets a great new look
17,315 users
Wikipedia Peek
Shows previews of linked articles on Wikipedia pages.
3,317 users
Wikipedia Context Menu Search
Search for highlighted text on Wikipedia via the context menu.
2,952 users
Random Unusual Wikipedia new tab
Redirects to a random unusual Wikipedia page when you open a new tab, because when you're opening a new tab you're looking for a distraction and that distraction might as well be a weird fact. Or show random Cognitive Bias, or Philosophical concept.
68 users
New Tab Override (WebExtension)
New Tab Override brings back the ability to change the page which is shown when opening a new tab.
106,810 users
Tree Style Tab
Show tabs like a tree.
130,474 users
Tab Auto Refresh
Automatically refresh tabs based on custom time intervals
54,006 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
82,050 users