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.
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Adblock Plus
Featured
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Search and New Tab by Yahoo
This Add-on sets your default Search to Yahoo, and it brings a fresh look to every new tab page, powered by Yahoo.
Image Assistant
Requires Restart
Opens images in any external viewer (having saved them on local disk), thus providing zooming, rotating, & other rich functionality not available by default (including any editing features supported by the viewer). Or 1-click-save without opening...
uBlock Origin
Featured
Finally, an efficient blocker. Easy on CPU and memory.
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
Privacy Badger
Compatible with Firefox 57+
Featured
Protects your privacy by blocking spying ads and invisible trackers.
anonymoX
Easy anonymous web browsing.
– Change your IP-Address and country
– Visit blocked or censored websites.
– Delete cookies, show your public ip, and more
We provide the proxy servers, no external proxies or other programs required
Flash Video Downloader - YouTube HD Download [4K]
Flash Video Downloader helps you download any video (flv, mp4, HD) from YouTube, Facebook, Break, Metacafe and more in one click. You can download mp3, music (iPod), avi and more. Download Flash games. Download Helper. 4K download.
Cisco WebEx Extension
Compatible with Firefox 57+
Join WebEx meetings using Firefox ™
AdBlock for Firefox
Compatible with Firefox 57+
Featured
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
1-Click YouTube Video Download
Requires Restart
The simplest YouTube Video Downloader for all YouTube Flash sites, period.
Enhancer for YouTube™
Compatible with Firefox 57+
Featured
Tons of features to improve your user experience on YouTube™.
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Hoxx VPN Proxy
Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.
Greasemonkey
Requires Restart
Featured
Customize the way a web page displays or behaves, by using small bits of JavaScript.
DownThemAll!
Featured
The first and only download manager/accelerator built inside Firefox!
NoScript Security Suite
Requires Restart
Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Awesome Screenshot Plus - Capture, Annotate & More
Compatible with Firefox 57+
Featured
Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!
Download Flash and Video
Requires Restart
Download Flash and Video is a great download helper tool that lets you download Flash games and Flash videos (YouTube, Facebook, Dailymotion, Google Videos and more) with a single click.
The downloader is very easy to use.
Firebug
Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...
To create your own collections, you must have a Mozilla Add-ons account.
