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 18,534,047 users
- 2. Video DownloadHelper 6,239,103 users
- 3. Firebug 2,818,949 users
- 4. NoScript Security Suite 2,245,292 users
- 5. Greasemonkey 1,786,655 users
- 6. DownThemAll! 1,640,581 users
- 7. FlashGot Mass Downloader 1,354,732 users
- 8. Web of Trust - WOT 1,342,425 users
- 9. Flash Video Downloader - Full HD Download 1,337,463 users
- 10. Adblock Plus Pop-up Addon 1,201,482 users
Featured Extensions See all »
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Secure Login is an extension for Firefox integrated password manager.This add-on is not compatible with your version of Firefox because of the following:
72,005 users -
YouTube High Definition is a powerful tool that will let you play all YouTube videos in High Definition automatically.This add-on is not compatible with your version of Firefox because of the following:
214,063 users -
Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...This add-on is not compatible with your version of Firefox because of the following:
33,540 users -
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.This add-on is not compatible with your version of Firefox because of the following:
36,730 users -
Make sure your tabs stay visible all the time.This add-on is not compatible with your version of Firefox because of the following:
12,955 users -
Protect your privacy. Stop companies and advertisers from tracking your browsing and sending you spam email.This add-on is not compatible with your version of Firefox because of the following:
456,395 users -
Reader is the ultimate Reader tool for Firefox.This add-on is not compatible with your version of Firefox because of the following:
29,754 users -
http://en.wikipedia.org/wiki/Text-to-voice. TTS gives Firefox the power of speech. Select text, click the button on the bottom right of Firefox window and this add-on speaks the selected text for you. Isn't it brilliant? Audio is downloadable.
This add-on is not compatible with your version of Firefox because of the following:
31,974 users -
Contextual (inline) unit, timezone, and currency converter on any web site, plus custom conversions for offline text. Shopping assistant also included -- find the best deals online! (Currency conversions and shopping assistant disabled by default.)
This add-on is not compatible with your version of Firefox because of the following:
11,370 users -
Downloads YouTube videos in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice. It also contains a pure JavaScript library to extract the ORIGINAL audio file out of FLV videos. It optionally downloads subtitles as well!
This add-on is not compatible with your version of Firefox because of the following:
508,204 users -
Watch videos without flash
This add-on is not compatible with your version of Firefox because of the following:
24,246 users -
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
This add-on is not compatible with your version of Firefox because of the following:
259,101 users -
Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.
This add-on is not compatible with your version of Firefox because of the following:
99,383 users -
Cookies when you need them, not when others need them to track you - gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.
This add-on is not compatible with your version of Firefox because of the following:
145,356 users -
NoSquint allows you to adjust the text-only and full-page (both text and images) zoom levels as well as color settings both globally (for all sites) and per site.
This add-on is not compatible with your version of Firefox because of the following:
236,672 users -
Remove or manage a new and uncommon kind of cookies, better known as LSO's.The BetterPrivacy safeguard offers various ways to handle Flash-cookies set by Google, YouTube, Ebay and others...
This add-on is not compatible with your version of Firefox because of the following:
Latest updates: See bottom link 'version history'!654,945 users -
One click to clear your cache, cookies, history, html5/local storage, http logins, all of them or restart your browser with/without notifications.
This add-on is not compatible with your version of Firefox because of the following:
45,200 users -
An add-on to perform free-memory operations without visiting about:memory.
This add-on is not compatible with your version of Firefox because of the following:
17,392 users
Up & Coming Extensions See all »
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Allows manipulation of the playback rate of HTML5 videosThis add-on is not compatible with your version of Firefox because of the following:
13,043 users -
To detect the URL of the streaming audio and video, so that you can copy from the page context menu.This add-on is not compatible with your version of Firefox because of the following:
8,614 users -
Downloading videos from popular sites (e.g. YouTube, Vimeo, etc).This add-on is not compatible with your version of Firefox because of the following:
33,834 users -
Want to save money shopping online?This add-on is not compatible with your version of Firefox because of the following:
Automatically get the best prices, coupons & promo codes.
✔ Uses HTTPS
✔ Automatically get the best prices & coupon codes
✔ Works on search engines
✔ Product information
Safe · Discreet · 100% Free14,263 users -
Translate entire web page or selected text using google translateThis add-on is not compatible with your version of Firefox because of the following:
There are many translators on Firefox. There are two features they're not supported:
1.HTTPS pages
2.Page logined
This addon can translate all pages you can open in firefox2,488 users -
Keep your menus in check by filtering out items you never use.This add-on is not compatible with your version of Firefox because of the following:
1,722 users -
Gives you a place to put all your add-on buttons without over-crowding the navigation bar.
This add-on is not compatible with your version of Firefox because of the following:
1,861 users -
Loop HTML5 Video and Music.
This add-on is not compatible with your version of Firefox because of the following:
1,524 users -
Open in Safari does just what it says. If you’re looking for a quick way to load certain web pages in Safari directly from Firefox, on-demand, this extension is for you. This extension is designed for Firefox 3.5 and Mac OS X only.
This add-on is not compatible with your version of Firefox because of the following:
943 users -
Gives you a quick way to restart if memory usage is too high.
This add-on is not compatible with your version of Firefox because of the following:
40,024 users -
This addon help you to block facebook ads and change your facebook to a new look
This add-on is not compatible with your version of Firefox because of the following:
1,444 users -
An easier management of the user interface language
This add-on is not compatible with your version of Firefox because of the following:
2,052 users -
Hide Firefox User Interface.
This add-on is not compatible with your version of Firefox because of the following:
1,252 users -
Manage your installed personas (lightweight themes).
This add-on is not compatible with your version of Firefox because of the following:
15,988 users -
Implements the loop attribute for HTML5 videos/audios and adds an item to control it from the context menu.
This add-on is not compatible with your version of Firefox because of the following:
1,078 users -
Blocks casino related websites and displays an awareness page.
This add-on is not compatible with your version of Firefox because of the following:
1,898 users -
Permanently hides the Ads panel in the right side of New Yahoo! Mail, the 'Sponsored' email at the Top, and ads at the Left to give you a full-width Premium email experience for free! The other option, of course is to pay $50 a year to Yahoo! Inc. :)
This add-on is not compatible with your version of Firefox because of the following:
4,363 users -
Firefox for Vim and Links addicts. The next generation of Vimperator by its primary developers.
This add-on is not compatible with your version of Firefox because of the following:
- Add-on has opted into strict compatibility checking.
3,383 users
Featured Themes See all »
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Cats on the Couch
1,630 users -
horizon in yellow
2,110 users -
Lovely Lilies
958 users -
Four Seasons Breeze
818 users -
Blue Mozilla Firefox
3,502 users -
really cute bird
3,603 users -
The Surfer 2
2,545 users -
Blue,white triangles
2,573 users -
答应了苏苏要做的
989 users -
Funnel of the perdition 4777
971 users -
mozilla firefox fire - fuego
3,253 users -
Continuous Field of Flowers
2,783 users -
Sails at Sunset
1,815 users -
Flamingos, Flamingoes
1,180 users -
Spring_Damask
917 users -
blooming tree in the right
3,574 users -
Gravity's Rainbow
1,124 users -
Easter pattern
1,930 users
Featured Collections See all »
To create your own collections, you must have a Mozilla Add-ons account.
