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 20,325,092 users
- 2. Video DownloadHelper 4,503,960 users
- 3. NoScript Security Suite 2,119,754 users
- 4. Firebug 1,959,727 users
- 5. uBlock Origin 1,502,984 users
- 6. Easy Screenshot 1,491,366 users
- 7. Ghostery 1,406,588 users
- 8. DownThemAll! 1,239,740 users
- 9. Greasemonkey 1,223,695 users
- 10. Download YouTube Videos as MP4 1,083,504 users
Featured Extensions See all »
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Tab Memory Usage displays the amount of memory is used by each tabThis add-on is not compatible with your version of Firefox because of the following:
37,661 users -
Removes formatting from copied text.This add-on is not compatible with your version of Firefox because of the following:
20,274 users -
The first and only download manager/accelerator built inside Firefox!This add-on is not compatible with your version of Firefox because of the following:
1,239,740 users -
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.This add-on is not compatible with your version of Firefox because of the following:
290,312 users -
Detects and automatically closes duplicate tabs.This add-on is not compatible with your version of Firefox because of the following:
7,652 users -
An easy-to-use tab reloader with custom reloading time settings for individual tabsThis add-on is not compatible with your version of Firefox because of the following:
3,346 users
Up & Coming Extensions See all »
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Access your Identity Safe Vault, which remembers your usernames and passwords for single-click access to your favorite sites.This add-on is not compatible with your version of Firefox because of the following:
11,717 users -
YouTube Video Player Speed play YouTube videos in whatever speed you wantThis add-on is not compatible with your version of Firefox because of the following:
6,813 users -
The Mozilla Firefox Educational ToolThis add-on is not compatible with your version of Firefox because of the following:
824 users -
A Simple Addon Just Right Click on any Video and Choose Download Mp3This add-on is not compatible with your version of Firefox because of the following:
4,344 users -
Save anything on the web to OneNote. Clip it to OneNote, organize and edit it, then access it from any device.This add-on is not compatible with your version of Firefox because of the following:
457 users -
ReviewMeta analyzes millions of reviews and helps you decide which to trust.This add-on is not compatible with your version of Firefox because of the following:
1,802 users
Featured Themes See all »
Featured Collections See all »
To create your own collections, you must have a Mozilla Add-ons account.
