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Simple YouTube to MP3/MP4 Converter and Downloader

Download youtube videos as mp3/mp4/ogg/webm fast and easy! Adding mirrors everyday to decrease any downtime! We monitor comments and work to fix any problems as soon as possible!

Rated 4 out of 5 stars (137)
126,515 users

To Google Translate Compatible with Firefox 57+

Right-click on a section of text and click on Translate icon next to it to translate or listen it to your language.

Rated 4 out of 5 stars (105)
66,722 users

ExHentai Easy 2

When accessing exhentai.org the user is presented with a photo of a sad panda. Access to the site is restricted to users of the sister site http://forums.e-hentai.org whom must manually copy their IPB cookie. This plugin automates this process.

Rated 4 out of 5 stars (67)
64,858 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 (160)
44,863 users

Enhancer for YouTube™ Compatible with Firefox 57+

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

Rated 5 out of 5 stars (74)
42,941 users

Restart

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

Rated 5 out of 5 stars (70)
29,432 users

Quick Gestures

Touch & swipe gestures with single finger.

Rated 4 out of 5 stars (80)
27,159 users

QuitNow Featured

Adds a Quit menu item back to Firefox / Mobile. With the original Mozilla branding!

Rated 4 out of 5 stars (128)
26,857 users

Close Tab Button

Adds an ×-PageAction to close the tab

Rated 5 out of 5 stars (12)
25,610 users

Youtube Downloader mp3

Easy to use youtube video to mp3 downloader

Rated 4 out of 5 stars (122)
23,786 users

Mp3 Downloader for SoundCloud™

Add download link to all SoundClould tracks

Rated 4 out of 5 stars (33)
23,100 users

Pdf Creator

Convert any webpage to a pdf quickly using pdfmage.org service

Please see https://addons.mozilla.org/en-US/firefox/addon/webpage-to-pdf/privacy/ for tracking information related to this addon

Rated 3 out of 5 stars (20)
22,332 users

CleanQuit (Mobile)

Clean up the mess and quit! This extension brings back the good old quit button to life as well as the ability to clean what you wish at the same time.

Rated 4 out of 5 stars (50)
13,207 users

AntiGameOrigin v6

AntiGameOrigin - the other OGame experience for all communities.

Rated 5 out of 5 stars (13)
12,923 users

Open With Google Chrome

Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.

Rated 5 out of 5 stars (43)
11,542 users

Redirect Bypasser

Avoid redirects and has direct access to the sites you want to visit.

Rated 4 out of 5 stars (38)
11,175 users

YoutubeMp3 Compatible with Firefox 57+

A Simple Addon Just Right Click on any Video and Choose Download Mp3

Rated 4 out of 5 stars (11)
10,824 users

Tap Translate Featured

Adds a translate button to the long-tap menu.
Github: https://github.com/miraks/Tap-Translate

Rated 4 out of 5 stars (105)
10,640 users

Font Finder (revived) Compatible with Firefox 57+

Get all CSS styles of selected text

Rated 5 out of 5 stars (12)
8,861 users

JSONovich

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

Rated 4 out of 5 stars (39)
8,293 users