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Instant Translate: Ultimate Translator Compatible with Firefox 57+ Featured

Translator, dictionary and text-to-speech for 103 languages. Select and translate on any page with a shortcut on double-click.

Rated 4 out of 5 stars (126)
19,136 users

Tile Tabs Requires Restart Featured

Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.

Rated 5 out of 5 stars (250)
62,051 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)
6,764 users

QuickMark Featured

A quick and minimalistic way to create bookmarks.

Rated 5 out of 5 stars (55)
9,035 users

User-Agent Switcher Featured

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (39)
53,575 users

Font Finder (revived) Compatible with Firefox 57+ Featured

Get all CSS styles of selected text

Rated 5 out of 5 stars (19)
9,015 users

DownThemAll! Featured

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

Rated 4 out of 5 stars (1,789)
963,011 users

FindBar Tweak Featured

Between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, it has everything to make the Find Toolbar a powerful and accessible research tool!

Rated 5 out of 5 stars (269)
29,483 users

Ecosia — The search engine that plants trees! Featured

Ecosia is a search engine that donates 80% of its surplus income to planting trees. By searching with Ecosia you can help the environment for free.
This extension adds Ecosia.org as the default search engine to your Firefox. Give it a try!

Rated 5 out of 5 stars (153)
209,775 users

FoxyProxy Standard Requires Restart Featured

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Rated 4 out of 5 stars (392)
197,195 users

Proxy Switcher Featured

Access to the complete Firefox's proxy settings right from a toolbar panel

Rated 5 out of 5 stars (41)
32,424 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 (1,989)
356,784 users

Copy Plain Text 2 Requires Restart Featured

Copies text without formatting

Rated 5 out of 5 stars (83)
32,530 users

Emoji Cheatsheet Compatible with Firefox 57+ Featured

A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.

Rated 4 out of 5 stars (45)
42,876 users

Web Clipper: Easy Screenshot Featured

Easy Screenshot is an easy to use screen capture tool. Simply press one of the context menu items to capture entire or a portion of your screen.

Rated 4 out of 5 stars (30)
9,513 users

lesspass Compatible with Firefox 57+ Featured

Use LessPass add-on to generate complex passwords and log in automatically to all your sites

Rated 4 out of 5 stars (13)
4,255 users

Font Finder Requires Restart Featured

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (75)
27,348 users

Wikipedia Peek Compatible with Firefox 57+ Featured

Shows previews of linked articles on Wikipedia pages.

Rated 4 out of 5 stars (16)
1,686 users

YouTube High Definition Featured

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 (244)
404,180 users

uMatrix Featured

Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.

Rated 5 out of 5 stars (126)
35,368 users