Top-Rated Extensions

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Ageless for YouTube Compatible with Firefox 57+

Watch age restricted YouTube videos without signing in.

Rated 5 out of 5 stars (56)
11,291 users

AdBlocker Ultimate Featured

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 (1,782)
397,893 users

Google search link fix Compatible with Firefox 57+ Featured

This extension prevents Google and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.

Rated 5 out of 5 stars (214)
71,364 users

Send Link in context menu Requires Restart

Add Send Link back into context menu. This item was removed in Firefox 16.

Rated 5 out of 5 stars (33)
1,906 users

CantoFish Requires Restart

CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.

Rated 5 out of 5 stars (23)
634 users

Ultrawidify Compatible with Firefox 57+

Aspect ratio fixer for Youtube. Allows improperly encoded videos to properly fit wider displays (e.g. 21:9)

Rated 5 out of 5 stars (14)
2,033 users

Copy Link URL Requires Restart

Copy the URLs of the selected links to clipboard.

Rated 5 out of 5 stars (44)
7,118 users

Full Screen for Firefox Compatible with Firefox 57+

Go full screen with one click on the button.

Rated 5 out of 5 stars (55)
1,905 users

Bdword English to Bengali Dictionary Requires Restart

Find English to Bengali Meaning by clicking twice on any word.

Rated 5 out of 5 stars (14)
531 users

Link Properties Plus Requires Restart

Provides extended link properties: size of linked file, last modified time, etc.

Rated 5 out of 5 stars (14)
1,617 users

xThunder Requires Restart

Manage popular downloaders (Windows, Linux, Mac) and support special links of thunder,flashget,qqdl,ed2k,magnet,fs2you.

Rated 5 out of 5 stars (84)
180,410 users

O'Notes Requires Restart

Notes like in Opera 12

Rated 5 out of 5 stars (25)
692 users

Add-ons Manager - Version Number

Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (21)
1,830 users

Rainbow Color Tools Requires Restart

Color tools for web development.

Color picker and eyedropper + saving colors and trying out colors with drag and drop.

Rated 5 out of 5 stars (94)
23,516 users

YouTube Video Replay

YouTube Video Replay is a new tool that lets you replay YouTube Videos.

Rated 5 out of 5 stars (28)
8,425 users

t5m.co URL Shortener

Shorten url with t5m.co URL Shortener

Rated 5 out of 5 stars (28)
81 users

Saved Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (253)
86,080 users

Free Play Club Requires Restart

Menu per il Forum Free Play Club

Rated 5 out of 5 stars (22)
1 user

Download Panel Tweaker

Some tweaks for built-in download panel

Rated 5 out of 5 stars (42)
5,329 users

Slim Add-ons Manager Featured

The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.

Rated 5 out of 5 stars (49)
8,159 users