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Hide Tabbar Requires Restart

Hide the tabbar by just pressing a key.

Rated 4 out of 5 stars (83)
13,372 users

Youtube Dark Mode Compatible with Firefox 57+

Switch youtube to dark mode. Dark mode will help devices save battery and useful for your sleeping. This dark mode is supported by https://www.emojiselector.com

Rated 5 out of 5 stars (67)
1,327 users

Search Helper - Enhance Google Requires Restart

Open Google search results in multiple tabs. Access your last search results from a toolbar button. Get similar sites for any Google search result.

Rated 5 out of 5 stars (6)
19,039 users

Hide Sync in Menu

Hide "Sign in to Sync" button in the menu.

Rated 5 out of 5 stars (4)
1,382 users

Browsizer Requires Restart

Move and Resize Browser Window.

Rated 5 out of 5 stars (10)
4,891 users

Dark Theme for Google™ Compatible with Firefox 57+

A highly customizable dark theme for Google products (search, images, translate, and contacts)

Rated 4 out of 5 stars (5)
1,185 users

Add URL to Window Title (Advanced KeePass Usage)

Add the full URL or hostname of the current web page to the window title. Designed to help other applications identify the current window. Helps KeePass (http://www.keepass.info) to identify the current URL for auto-type.

Rated 5 out of 5 stars (7)
4,189 users

Full Screen for Firefox Compatible with Firefox 57+

Go full screen with one click on the button.

Rated 5 out of 5 stars (23)
1,513 users

Rebrand Requires Restart

This wizard creates an XPI that rebrands Firefox, SeaMonkey or Thunderbird. You can change the brand name as well as the brand images and icons.

Rated 4 out of 5 stars (13)
7,412 users

Image-Show-Hide Requires Restart

simply turn on|off images on all web-pages and (optional) autoreload current...

Rated 4 out of 5 stars (32)
12,015 users

Dark Mode (WebExtension) Compatible with Firefox 57+

A global dark theme for the web

Rated 5 out of 5 stars (22)
4,454 users

kiosk-costaisa Requires Restart

RKiosk (Real Kiosk), fullscreen kiosk mode: all menus, keys etc. disabled
Costaisa variant.

Rated 3 out of 5 stars (9)
2,566 users

TextMarker Go Requires Restart

Allows to highlight the selected text.
1) three customizable colors for highlight
2) highlight functions as bookmarks
3) hotkeys for highlight selected text, remove highlights, and jump to highlighted text.

Rated 4 out of 5 stars (41)
5,660 users

Menu Wizard Requires Restart Featured

Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (187)
125,084 users

Menu Mod Requires Restart

Adds many options to modify the Firefox menus. Presently...

Rated 4 out of 5 stars (55)
1,128 users

Card Color Titles for Trello

Show the card label titles on trello.com

Not yet rated
1,307 users

Literal - PDF Reader Compatible with Firefox 57+

Literal replaces Firefox's default PDF reader with a cloud connected and unobtrusive user interface. Keep track of your reading activity, history, and progress automatically, integrate with cloud storage, and upgrade your e-reading experience.

Rated 4 out of 5 stars (1)
1,570 users

Noise Requires Restart

Make sound responses while events happen.

Rated 4 out of 5 stars (41)
2,098 users

Default Responsive Design View

This add-on starts your browser in responsive design view by default.

Rated 5 out of 5 stars (2)
1,954 users

JSON Lite Compatible with Firefox 57+

Fast JSON viewer - highlights, shows items count/size, handles large files

Rated 4 out of 5 stars (10)
6,117 users