Web Development

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User-Agent Switcher (revived)

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (6)
2,237 users

ipFood Requires Restart Featured

Simulate the use of a series of proxy changing at each new connection.

Rated 4 out of 5 stars (7)
63,320 users

MozRepl Requires Restart

Interactive Javascript Console for Mozilla Applications Developers

Rated 5 out of 5 stars (12)
33,069 users

Block Content (img,css,js,...) Requires Restart

Block download of any of the following:
Image, Script, Stylesheet, Font (@font-face), Audio/Video, IFrame, Object (like flash and java applets)

Rated 5 out of 5 stars (7)
2,528 users

iMacros for Firefox Featured

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Rated 4 out of 5 stars (453)
923,817 users

XHTML Mobile Profile Requires Restart

Firefox does not natively support the mime-type application/vnd.wap.xhtml+xml. This is one of the possible mime-types for XHTML Mobile Profile. This addon adds support for this mime-type.

Rated 5 out of 5 stars (10)
6,784 users

Image Zoom (ugly fixes) Requires Restart

An ugly attempt at fixing Image Zoom

Rated 4 out of 5 stars (10)
2,360 users

Extension Defender

Protect Firefox with Extension Defender, scan your extensions for unwanted or malicious apps. Install Extension Defender and stay protected.

Rated 4 out of 5 stars (10)
2,706 users

CloudBleed

CloudBleed, search have you visited affected websites recently by browser history.

Rated 5 out of 5 stars (3)
2,665 users

Emoji Keyboard Featured

A free extension of the web tool https://emojikeyboard.org. It helps input emoji in the web browser with an extensive search functionality.

Rated 5 out of 5 stars (49)
90,566 users

Local Load Requires Restart

Load common JavaScript libraries from local resources

Rated 4 out of 5 stars (32)
3,452 users

FB unseen

Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.

Rated 4 out of 5 stars (3)
2,223 users

Canvas Defender

Instead of completely blocking canvas fingerprinting, Canvas Defender add-on creates a unique and persistent noise that hides your real canvas fingerprint. This add-on protects you while browsing both in normal and private mode.

Rated 4 out of 5 stars (10)
3,216 users

One-click Screenshot

Take screenshots of entire websites. Simple as that.

Rated 5 out of 5 stars (5)
1,421 users

JSON Lite

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

Rated 5 out of 5 stars (5)
3,973 users

Gyazo

Grab any image on the web and share it instantly

Rated 3 out of 5 stars (2)
5,138 users

Random Agent Spoofer

Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options

Rated 5 out of 5 stars (144)
199,869 users

Disable WebRTC

WebRTC leaks your actual IP addresses from behind your VPN, by default.

Rated 5 out of 5 stars (43)
59,761 users

Refresh Blocker

Blocking all Meta Auto-Refresh reloading according to user-preference

Rated 4 out of 5 stars (7)
2,159 users

Policy Control (noScript, noCSS, noMedia, ...)

This extension helps you quickly disable and enable different types of resources such as JavaScript, CSS, and Media. The extension can be used to increase privacy as well as saving bandwidth by blocking unwanted contents.

Rated 4 out of 5 stars (10)
2,416 users