Most Popular Extensions

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PDF Viewer(discontinued)

THIS ADD-ON IS NO LONGER UPDATED PLEASE USE THE BUILT IN PDF VIEWER.

Rated 4 out of 5 stars (275)
54,680 users

ProCon Latte Content Filter

Block sites containing pornography, or any other kind of material, based on simple keyword lists.

Rated 4 out of 5 stars (250)
47,860 users

Video Downloader Prime

Easily download most popular video formats.

Rated 4 out of 5 stars (55)
47,275 users

YouTube™ Flash-HTML5

Play YouTube™ Videos in Flash or HTML5 Player

Rated 4 out of 5 stars (35)
44,412 users

Ad-Blocker

Ad Blocker lets you block all ads, tracking & malware from the web world. It is an effective solution to browse the web without offensive and annoying ads you hate to see.

Rated 4 out of 5 stars (68)
44,272 users

Browser-Security

Browser Security - DER Schutz vor Phishing und Malware

Rated 5 out of 5 stars (10)
42,651 users

Dark Background and Light Text

Makes every page (or only pages that you want) to have light text on dark background. Exact colors are customizable.

Rated 5 out of 5 stars (157)
40,935 users

Magic Actions for YouTube™

Enhance your YouTube watching experience! Auto HD, Ad Block, Cinema Mode, Mouse Wheel Volume Control, Screenshot...

Rated 5 out of 5 stars (184)
40,592 users

Enhancer for YouTube™

One of the best extensions for YouTube™. All the features you need to make YouTube™ more awesome!

Rated 5 out of 5 stars (72)
39,170 users

Turbo Download Manager

a download manager with multi-threading support

Rated 4 out of 5 stars (50)
34,952 users

Print Friendly & PDF

Makes a Printer Friendly & PDF version of any webpage. Removes navigation, ads, and junk. Formats the page for print so you save paper and ink. Good for the environment and your wallet.

Rated 3 out of 5 stars (72)
34,393 users

Ebates Cash Back Button

The Ebates Cash Back Button makes earning Cash Back and finding Hot Deals easier than ever.

Rated 5 out of 5 stars (95)
33,323 users

NO Google Analytics

Actively blocks Google Analytics from running on your Firefox, manually stopping the website you visit from tracking you!

Rated 3 out of 5 stars (19)
32,950 users

YouTube Center

YouTube Center contains all kind of different useful functions which makes your visit on YouTube much more entertaining.

Rated 3 out of 5 stars (276)
32,854 users

YouTube Video Downloader - For Context Menu

Right click YouTube video links on any websites, download it from context menu. Multi formats(mp4 flv 3gp), easy to use and fast to response.

Rated 4 out of 5 stars (32)
30,505 users

AdBlocker for Facebook™

Block Ads Seamlessly on Facebook.com

Rated 3 out of 5 stars (21)
30,226 users

Speed Tweaks (SpeedyFox)

This extension provides a list to almost all the settings that you may need to alter in order to enhance Firefox's speed.

Rated 4 out of 5 stars (54)
28,035 users

about:addons-memory

Adds an about:addons-memory page that details add-on memory usage

Rated 4 out of 5 stars (131)
27,244 users

Restart

"Restart" menu and button, with configurable shortcut key.

Rated 5 out of 5 stars (70)
26,905 users

Quick Gestures

Touch & swipe gestures with single finger.

Rated 4 out of 5 stars (80)
26,205 users