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 17,698,874 users
- 2. Video DownloadHelper 6,201,537 users
- 3. Firebug 2,616,201 users
- 4. NoScript Security Suite 2,265,579 users
- 5. Greasemonkey 1,801,849 users
- 6. DownThemAll! 1,569,428 users
- 7. Web of Trust - WOT 1,337,641 users
- 8. Flash Video Downloader - Full HD Download 1,299,015 users
- 9. FlashGot Mass Downloader 1,288,335 users
- 10. Adblock Plus Pop-up Addon 1,165,125 users
Featured Extensions See all »
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FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.This add-on is not compatible with your version of Firefox because of the following:
389,894 users -
A Statusbar with speed, percentage, time and loaded size (similar to Opera's one)This add-on is not compatible with your version of Firefox because of the following:
75,209 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.This add-on is not compatible with your version of Firefox because of the following:
82,507 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:
43,188 users -
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.This add-on is not compatible with your version of Firefox because of the following:
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).17,698,874 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:
10,872 users -
Stops javascript annoyances such as forbidden right click, forbidden text selection or cascading dialog boxes.This add-on is not compatible with your version of Firefox because of the following:
268,122 users -
Web page to PDF conversion tool
This add-on is not compatible with your version of Firefox because of the following:
37,560 users -
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
This add-on is not compatible with your version of Firefox because of the following:
95,078 users -
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.
This add-on is not compatible with your version of Firefox because of the following:
Beta builds on versions page!28,879 users -
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
This add-on is not compatible with your version of Firefox because of the following:
847,406 users -
Multifox is an extension that allows Firefox to connect to websites using different user names. Simultaneously!
This add-on is not compatible with your version of Firefox because of the following:
58,579 users -
Redirect Cleaner cleans Redirects from Links
This add-on is not compatible with your version of Firefox because of the following:
www.example.com?url=www.mozilla.org17,053 users -
Old school retweets for Twitter.
This add-on is not compatible with your version of Firefox because of the following:
4,456 users -
CouponsHelper automatically finds coupon codes from thousands of retailers while you shop online. CouponsHelper is hidden until it finds coupons, so no pointless pop ups !
This add-on is not compatible with your version of Firefox because of the following:
Tutorial video: http://www.youtube.com/watch?v=SrYCmKdvzE473,670 users -
DuckDuckGo is a search engine that does not track you. Adds DuckDuckGo as the default address bar, search bar and right-click search engine. Adds a handy toolbar button for easy access to !bang tags. Adds DuckDuckGo instant answers to Google/Bing.
This add-on is not compatible with your version of Firefox because of the following:
220,231 users -
Create a QR Code of the selected text or current URL. Customize image with different colors and sizes.Use CTRL-SHIFT-Q to quickly see the QR Code. Also possible to create a QR Code from free text within Firefox. Works completely offline!
This add-on is not compatible with your version of Firefox because of the following:
7,539 users -
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
This add-on is not compatible with your version of Firefox because of the following:
1,288,335 users
Up & Coming Extensions See all »
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Notifies you of sites affected by the Heartbleed vulnerability via an icon in the location bar.This add-on is not compatible with your version of Firefox because of the following:
1,189 users -
A Firefox add-on to notify you when you visit a webpage vulnerable to HeartbleedThis add-on is not compatible with your version of Firefox because of the following:
1,706 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 firefox7,212 users -
Allows manipulation of the playback rate of HTML5 videosThis add-on is not compatible with your version of Firefox because of the following:
19,143 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:
2,478 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:
10,385 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:
2,460 users -
Hide Firefox User Interface.
This add-on is not compatible with your version of Firefox because of the following:
1,808 users -
Double-click any image to download it quickly and quietly.
This add-on is not compatible with your version of Firefox because of the following:
1,261 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:
37,278 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% Free14,823 users -
Loop HTML5 Video and Music.
This add-on is not compatible with your version of Firefox because of the following:
1,816 users -
Adds a toolbar button to exit Firefox...
This add-on is not compatible with your version of Firefox because of the following:
2,946 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:
5,182 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:
1,918 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:
1,106 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:
2,023 users -
YouTube Control Center is an open-source project that aims to enhance the overall YouTube experience by providing the end user with more control in what the playback process is concerned.
This add-on is not compatible with your version of Firefox because of the following:
1,198 users
Featured Themes See all »
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horizon in yellow
2,846 users -
Burst Of Flavours
65 users -
Blue Mozilla Firefox
6,042 users -
mozilla firefox fire - fuego
5,824 users -
Four Seasons Breeze
1,080 users -
susemi 1
90 users -
fractal waltz of the fireflies
113 users -
lace
48 users -
Handsome Bird
127 users -
Easter pattern
2,913 users -
Summer Fence
91 users -
behind curtain
146 users -
Blue,white triangles
3,286 users -
L'Arbre d'Eden
74 users -
Cats on the Couch
2,451 users -
答应了苏苏要做的
1,595 users -
Abstraction Distraction
61 users -
Sails at Sunset
2,921 users
Featured Collections See all »
To create your own collections, you must have a Mozilla Add-ons account.
