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 14,686,173 users
- 2. uBlock Origin 3,904,201 users
- 3. Video DownloadHelper 3,752,054 users
- 4. Easy Screenshot 2,482,400 users
- 5. NoScript Security Suite 1,776,683 users
- 6. Firebug 1,529,954 users
- 7. Ghostery 1,020,931 users
- 8. DownThemAll! 992,218 users
- 9. Greasemonkey 927,340 users
- 10. Download YouTube Videos as MP4 916,829 users
Featured Extensions See all »
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Access to your favorite websites via an stylish speed dial!
This add-on is not compatible with your version of Firefox because of the following:
2,554 users -
Make the web faster, more private, and more secure.
This add-on is not compatible with your version of Firefox because of the following:
210,786 users -
a download manager with multi-threading support
This add-on is not compatible with your version of Firefox because of the following:
33,361 users -
Play YouTube™ Videos in Flash or HTML5 Player
This add-on is not compatible with your version of Firefox because of the following:
36,951 users -
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
This add-on is not compatible with your version of Firefox because of the following:
70,737 users -
Tool for managing the default action when you click a "mailto:" link. Specializing in sharing details for Webmail services.
This add-on is not compatible with your version of Firefox because of the following:
3,705 users
Up & Coming Extensions See all »
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Allows user to block gif images on a web page.
This add-on is not compatible with your version of Firefox because of the following:
23,424 users -
Download videos from web sites and avoid compromising entries in your browser history.
This add-on is not compatible with your version of Firefox because of the following:
7,881 users -
Write your email in Markdown, then make it pretty.
This add-on is not compatible with your version of Firefox because of the following:
1,038 users -
when activated, interrupts the built-in download manager to direct links to IDMan (Internet Download Manager)
This add-on is not compatible with your version of Firefox because of the following:
8,577 users -
A Firefox Shield study to learn more about users' understanding of how the web works.
This add-on is not compatible with your version of Firefox because of the following:
3,581 users -
YouTube AdBlock and Video Downloader - Smarttube
This add-on is not compatible with your version of Firefox because of the following:
18,139 users
Featured Themes See all »
Featured Collections See all »
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Winter Themes
Give your Firefox a winter wardrobe change!
15 add-ons · 185 followers
To create your own collections, you must have a Mozilla Add-ons account.