Top-Rated Extensions

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AdBlocker Ultimate Compatible with Firefox 57+

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

Rated 5 out of 5 stars (2,397)
411,195 users

Download Gram Video/Photo (Instagram Downloader) Compatible with Firefox 57+

"1-Click" download any video or photo from Instagram.

Rated 5 out of 5 stars (17)
1,638 users

Download LiveLeak Video Compatible with Firefox 57+

Save video from any Liveleak LiveLeak.com video in High quality.

1-click download any video directly from Live Leak.

Addon uses 3rd party site (www.knowyourliveleak.com) for operation.

Rated 5 out of 5 stars (41)
645 users

OneNote Web Clipper Compatible with Firefox 57+

Save anything on the web to OneNote. Clip it to OneNote, organize and edit it, then access it from any device.

Rated 5 out of 5 stars (424)
35,724 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 (261)
38,085 users

百度广告屏蔽 Compatible with Firefox 57+

屏蔽百度线上产品页面广告(搜索、新闻、贴吧、知道、音乐、图片、视频、文库等),点击扩展图标打开(如果已打开则切换到)百度页面,可当书签用,省去每次输入地址的麻烦。

Rated 5 out of 5 stars (16)
2,600 users

Ageless for YouTube Compatible with Firefox 57+

Watch age restricted YouTube videos without signing in.

Rated 5 out of 5 stars (61)
10,129 users

YouTube High Definition Compatible with Firefox 57+

YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

Rated 5 out of 5 stars (269)
374,726 users

Download Vine Video Compatible with Firefox 57+

Save video from any Vine video in original format.

1-click download any video directly from Vine.co.

Choose if you want video or just an image.

Addon uses 3rd party site (www.knowyourvine.com) for operation.

Rated 5 out of 5 stars (43)
640 users

Restart

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

Rated 5 out of 5 stars (89)
26,529 users

1-Click Youtube Repeat (with Play Counter) Compatible with Firefox 57+

Click to repeat any Youtube video and keep track of total plays.

Rated 5 out of 5 stars (45)
307 users

ScrollAnywhere Compatible with Firefox 57+

Grab and drag your scrollbar with your middle mouse button anywhere on the page.

Features also:
- "grab and drag" - phone like scroll style
- The Momentum - including infinite scroll

Warning: very addictive! :)

www.FastAddons.com

Rated 5 out of 5 stars (34)
662 users

Toggle Mixed Active Content

An icon that toggles the preference of blocking mixed active content.
Preference Name: security.mixed_content.block_active_content

Rated 5 out of 5 stars (14)
3,590 users

1-Click Downloader (Video or Photo) Compatible with Firefox 57+

Click to download any Youtube, Instagram, Facebook, Vid.me, Streamable, Imgur, LiveLeak, Vine video or photo.

Rated 5 out of 5 stars (151)
19,478 users

Privacy Settings

Alter Firefox's built-in privacy settings easily with a toolbar panel.

Rated 5 out of 5 stars (68)
19,603 users

Vue.js devtools Compatible with Firefox 57+

DevTools extension for debugging Vue.js applications.

Rated 5 out of 5 stars (22)
4,859 users

AntiGameOrigin v6

AntiGameOrigin - the other OGame experience for all communities.

Rated 5 out of 5 stars (22)
10,474 users

CanvasBlocker

Blocks the JS-API for modifying <canvas> to prevent Canvas-Fingerprinting.</canvas>

Rated 5 out of 5 stars (47)
18,165 users

Ebates Cash Back Button Compatible with Firefox 57+

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

Rated 5 out of 5 stars (175)
43,336 users

Extension Auto-Installer

Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.

Rated 5 out of 5 stars (46)
2,139 users