Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseMost Popular All »
- 1. Adblock Plus 20,891,227 users
- 2. Video DownloadHelper 4,593,370 users
- 3. Easy Screenshot 2,840,491 users
- 4. Firebug 2,266,390 users
- 5. NoScript Security Suite 2,163,975 users
- 6. uBlock Origin 1,501,439 users
- 7. Ghostery 1,451,225 users
- 8. DownThemAll! 1,290,242 users
- 9. Greasemonkey 1,271,331 users
- 10. Download YouTube Videos as MP4 1,113,489 users
Featured Extensions See all »
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The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.This add-on is not compatible with your version of Firefox because of the following:
340,250 users -
A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!This add-on is not compatible with your version of Firefox because of the following:
49,745 users -
"Dictionary (Google™ Translate) Anywhere" extension provides access to a floating multilingual Google Translate panel on any webpage.This add-on is not compatible with your version of Firefox because of the following:
12,310 users -
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.This add-on is not compatible with your version of Firefox because of the following:
104,392 users -
Simple and secure password management. Login automatically, never forget another password, stay in control of your passwords and improve their security. Powered by the world-renowned KeePass Password Safe.This add-on is not compatible with your version of Firefox because of the following:
64,528 users -
DuckDuckGo is the search engine that doesn't track you. This add-on makes DuckDuckGo your default search engine and includes some other useful features.This add-on is not compatible with your version of Firefox because of the following:
176,029 users
Up & Coming Extensions See all »
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Never miss a donation for your charity or good cause again with the easyfundraising Donation Reminder.This add-on is not compatible with your version of Firefox because of the following:
8,250 users -
Custom New TabThis add-on is not compatible with your version of Firefox because of the following:
3,359 users -
AUSkey will no longer be supported by Firefox in March 2017. To continue using your AUSkey in Firefox you need to download this browser extension.This add-on is not compatible with your version of Firefox because of the following:
2,725 users -
Very simple add-on that closes the current tab and make Firefox forget about the visit: suppressing cookies related to the current page, cleaning (beware : may be partial) the browser history and so on.This add-on is not compatible with your version of Firefox because of the following:
129,317 users -
Allows you to specify the time to restart browser.This add-on is not compatible with your version of Firefox because of the following:
40,811 users -
Smooth scrolling for Logitech mice.This add-on is not compatible with your version of Firefox because of the following:
1,082 users
Featured Themes See all »
Featured Collections See all »
To create your own collections, you must have a Mozilla Add-ons account.
