Featured Add-ons

by Mozilla

117 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,500 reviews

14,244,315 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 1,953 reviews

3,762,805 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.

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 510 reviews

888,802 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.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,787 reviews

959,383 users

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

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

1,739,208 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 507 reviews

664,105 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 1,115 reviews

898,531 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 1,474 reviews

996,768 users

Increase your browsing privacy, protection, and speed.

AdBlocker Ultimate by AdBlocker Ultimate

Rated 5 out of 5 stars 1,968 reviews

354,999 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 1,228 reviews

217,597 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 202 reviews

356,086 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

119,287 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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