Featured Add-ons

by Mozilla

117 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,468 reviews

14,490,809 users

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).

uBlock Origin by Raymond Hill

Rated 5 out of 5 stars 1,909 reviews

3,768,225 users

Finally, an efficient blocker. Easy on CPU and memory.

Enhancer for YouTube™ by Maxime RF

Tons of features to improve your user experience on YouTube™.

AdBlock for Firefox by AdBlock

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.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,783 reviews

968,842 users

The first and only download manager/accelerator built inside Firefox!

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 507 reviews

897,364 users

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

Privacy Badger by EFF Technologists

Protects your privacy by blocking spying ads and invisible trackers.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,576 reviews

1,759,996 users

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.

iMacros for Firefox by Ipswitch, Inc.

Rated 4 out of 5 stars 500 reviews

511,707 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,112 reviews

906,841 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Ghostery by Ghostery

Rated 4 out of 5 stars 1,469 reviews

1,016,272 users

Increase your browsing privacy, protection, and speed.

AdBlocker Ultimate by AdBlocker Ultimate

Rated 5 out of 5 stars 1,936 reviews

357,324 users

Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!

Easy Youtube Video Downloader Express by Dishita

Rated 4 out of 5 stars 1,223 reviews

219,270 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.

HTTPS Everywhere by EFF Technologists

Rated 4 out of 5 stars 200 reviews

358,497 users

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Emoji Keyboard by Harry N.

Rated 4 out of 5 stars 69 reviews

119,433 users

A free extension of the web tool https://emojikeyboard.org. It helps input emoji in the web browser with an extensive search functionality.
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