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 13,576,181 users
- 2. uBlock Origin 3,688,736 users
- 3. Video DownloadHelper 3,526,133 users
- 4. Easy Screenshot 2,260,800 users
- 5. NoScript Security Suite 1,757,234 users
- 6. Firebug 1,322,613 users
- 7. iMacros for Firefox 1,302,912 users
- 8. Ghostery 943,410 users
- 9. DownThemAll! 924,440 users
- 10. Greasemonkey 866,595 users
Featured Extensions See all »
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An easy-to-use tab reloader with custom reloading time settings for individual tabs4,533 users -
Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!354,244 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.90,355 users -
"Best Youtube Video Downloader", Only one with 1080p Full-HD and 256kbps MP3 Direct Links. A clean, fast and simple addon for superfast and easy downloads in FLV, 3GP, MP3, MP4, 720p, 1080p qualities on Youtube pages.212,291 users -
Various enhancements for build-in "master password" (MP)
-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 windows18,286 users
Up & Coming Extensions See all »
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Save video from any Youtube video in High definition HD or Standard definition SD.
1-click download any video directly from Youtube.
Choose if you want .mp4, .webm, mobile, or audio only (audio only saves space and great for mobile devices)8,815 users -
Save video from any Facebook video in original .mp4 format.
"1-Click" download any video directly from Facebook.com.
Choose if you want video or just an image.
Addon uses 3rd party site (www.getyourfb.com) for operation.2,198 users -
Click to download any Youtube, Instagram, Facebook, Vid.me, Streamable, LiveLeak, Vine video or photo.6,636 users -
This extension enables you to hide the navigation bar through a toggle button. Currently the toggle button is the F2 key. You can change the key in the extensions options, as well as configure whether you want the Navigation Bar to be displayed on ...19,187 users -
Pioneer is an opt-in program that allows collection of richer data from Firefox.2,228 users
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This is a basic FireFox extension which simply scrolls the page down (and optionally up again) automatically at an adjustable rate.7,407 users
Featured Themes See all »
Featured Collections See all »
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Password Managers
Enjoy better security and more convenience with an excellent password manager.
5 add-ons · 123 followers -
Bookmark Managers
Customize and re-organize the way you manage your bookmarks.
8 add-ons · 9 followers -
Framework DevTools
A modernized development kit.
3 add-ons · 18 followers
To create your own collections, you must have a Mozilla Add-ons account.
