My Favorite Add-ons

by Zulkarnain K.

132 Add-ons in this Collection

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

171,954 users

View HTTP headers of a page and while browsing.

JSONView by Ben Hollis

Rated 5 out of 5 stars 130 reviews

96,567 users

View JSON documents in the browser.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

96,159 users

An HTTP analyzer addon for Firefox

JavaScript Deobfuscator by Wladimir Palant

Rated 4 out of 5 stars 21 reviews

53,137 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

Download Manager Tweak by squashr1979, andman42

Rated 4 out of 5 stars 403 reviews

81,985 users

Allows the download manager to also open in a tab or sidebar, and adds some optional display changes.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 329 reviews

169,797 users

Adds zoom and rotation functionality for images...

Firefox OS 1.1 Simulator by Myk Melez, J. Ryan Stinnett

Firefox OS Simulator is a test environment for Firefox OS. Use it to test your apps in a Firefox OS-like environment that looks and feels like a mobile phone. After installing it, go to Web Developer > Firefox OS Simulator to access its features.

Private Tab by Infocatcher

Rated 5 out of 5 stars 183 reviews

71,331 users

Adds private tabs.

Saved Password Editor by Daniel Dawson

Rated 5 out of 5 stars 200 reviews

89,091 users

Adds the ability to create and edit entries in the password manager.

Pearl Crescent Page Saver Basic screenshot tool by Kathleen Brade, Mark Smith

Rated 4 out of 5 stars 77 reviews

82,698 users

Save an image of a web page (including Flash content) to a file. Web page screenshots may be captured interactively or from the command line. Options allow you to control the output format (PNG or JPEG), image file name, scaling, and much more.

New Tab Tools by Geoff Lankow

Rated 4 out of 5 stars 146 reviews

23,497 users

Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...

RefControl by James Abbatiello

Rated 4 out of 5 stars 178 reviews

77,375 users

Control what gets sent as the HTTP Referer on a per-site basis.

about:addons-memory by Nils Maier

Adds an about:addons-memory page that details add-on memory usage

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 111 reviews

70,384 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

Add to Search Bar by Dr. Evil

Rated 5 out of 5 stars 598 reviews

87,730 users

Make any pages' search functionality available in the Search Bar (or "search box")...
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