Top-Rated Extensions

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Toggle animated GIFs

Start/stop GIF animations through a keyboard shortcut or by clicking them. You can also restart animations from the beginning, or disable animations by default.

Rated 5 out of 5 stars (80)
16,749 users

Textmarker

Highlighter with different colors, saving options, customizable highlight styles and undo/redo functionality.
Select some text, press M - done.
Changes can be stored in Textmarker history for later visits.

Rated 5 out of 5 stars (24)
3,707 users

Hoxx VPN Proxy

Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.

Rated 5 out of 5 stars (1,721)
144,916 users

Parental Control: Porn Blocker

Parental control app that denies access to porn sites. It uses a semantic parser that scans and blocks all kind of adult content.

Rated 5 out of 5 stars (54)
3,100 users

Privacy Settings

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

Rated 5 out of 5 stars (56)
20,713 users

Full Screen for Firefox Compatible with Firefox 57+

Go full screen with one click on the button.

Rated 5 out of 5 stars (12)
994 users

Open With Google Chrome

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

Rated 5 out of 5 stars (40)
10,040 users

Remote XUL Manager

Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.

Rated 5 out of 5 stars (37)
32,610 users

Smarter Scrolling Featured

Flick your finger quickly up or down to scroll right to the top or bottom of the page

Rated 5 out of 5 stars (26)
4,432 users

uBlock Origin Featured

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (1,249)
3,409,176 users

Dorando keyconfig Requires Restart

A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)

As of version 2016.2, Custom keys (using custom JavaScript) work again!

Rated 5 out of 5 stars (31)
4,110 users

Who is Hosting this Website? Compatible with Firefox 57+

Who is Hosting This Website is a free Add-on service for telling you- where websites are being hosted. "Who is Hosting this Website?" will also determine and display the IP address, DNS records and domain name ownership information (Whois Records).

Rated 5 out of 5 stars (9)
296 users

Copy Profile

Copy your profile to the sdcard for easy debugging.

Rated 5 out of 5 stars (9)
373 users

IP Geolocator Compatible with Firefox 57+

Shows detailed information about your IP and location.

Rated 5 out of 5 stars (9)
509 users

Youtube Watchmarker Compatible with Firefox 57+

Automatically mark videos on Youtube that you have already watched.

Rated 5 out of 5 stars (16)
1,039 users

Fixed Toolbar

For those who hate auto-hiding toolbars.

Rated 5 out of 5 stars (16)
1,104 users

Simple Popup Blocker

Simply toggle between three different popup blocking modes: allow all, allow requested or block all. Now with tracking protection.

Rated 5 out of 5 stars (23)
19,130 users

Android Text Reflow

Allow click events to reflow text to fit screen width after zoom events

Rated 5 out of 5 stars (11)
2,174 users

FireX Proxy

FireX Proxy extension.

Rated 5 out of 5 stars (20)
7,442 users

HDS Link Detector

This add-on automatically detects the HDS videos being played in browser and generates proper command line required for downloading videos with AdobeHDS.php script.

Rated 5 out of 5 stars (20)
6,774 users