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 14,244,315 users
- 2. uBlock Origin 3,762,805 users
- 3. Video DownloadHelper 3,650,998 users
- 4. Easy Screenshot 2,320,619 users
- 5. NoScript Security Suite 1,739,208 users
- 6. Firebug 1,421,121 users
- 7. Ghostery 996,768 users
- 8. DownThemAll! 959,383 users
- 9. Greasemonkey 898,531 users
- 10. Download YouTube Videos as MP4 888,802 users
Featured Extensions See all »
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Preview and navigate tab contents through popup.This add-on is not compatible with your version of Firefox because of the following:
68,461 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:
12,296 users -
provides an easy access to messenger.com and notifies you of all new messages (via badge icon text)This add-on is not compatible with your version of Firefox because of the following:
2,067 users -
Various enhancements for build-in "master password" (MP)This add-on is not compatible with your version of Firefox because of the following:
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows19,481 users -
Shut down the lights on YouTube.This add-on is not compatible with your version of Firefox because of the following:
Enjoy!48,225 users -
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.This add-on is not compatible with your version of Firefox because of the following:
24,680 users
Up & Coming Extensions See all »
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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:
1,902 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:
4,427 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:
4,101 users -
YouTube AdBlock and Video Downloader - SmarttubeThis add-on is not compatible with your version of Firefox because of the following:
12,978 users -
Redirects your Browser to the newest version of the javadocs.This add-on is not compatible with your version of Firefox because of the following:
Example: https://docs.oracle.com/javase/7/docs/api/java/lang/String.html -> https://docs.oracle.com/javase/8/docs/api/java/lang/String.html2,641 users -
Plugin for launching FCC applicationThis add-on is not compatible with your version of Firefox because of the following:
3,836 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 · 181 followers
To create your own collections, you must have a Mozilla Add-ons account.
