My Favorite Add-ons

by Zulkarnain K.

132 Add-ons in this Collection

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 19 reviews

56,837 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.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 159 reviews

156,987 users

View HTTP headers of a page and while browsing.

JSONView by Ben Hollis

Rated 5 out of 5 stars 134 reviews

97,796 users

View JSON documents in the browser.

New Tab Tools by Geoff Lankow

Rated 4 out of 5 stars 173 reviews

52,008 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...

Image Zoom by Jason Adams

Rated 4 out of 5 stars 334 reviews

165,076 users

Adds zoom and rotation functionality for images...

Download Manager Tweak by squashr1979, andman42

Rated 4 out of 5 stars 411 reviews

76,086 users

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

HttpFox by Martin Theimer

Rated 4 out of 5 stars 164 reviews

88,867 users

An HTTP analyzer addon for Firefox

Private Tab by Infocatcher

Rated 5 out of 5 stars 204 reviews

72,591 users

Adds private tabs.

QuickNote by Leszek Życzkowski, Jed Brown, others

Rated 5 out of 5 stars 169 reviews

25,871 users

A simple note-taking extension.

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.

RefControl by James Abbatiello

Rated 4 out of 5 stars 180 reviews

80,780 users

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

Saved Password Editor by Daniel Dawson

Rated 5 out of 5 stars 209 reviews

90,554 users

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

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

Rated 4 out of 5 stars 79 reviews

75,726 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.

Html Validator by Marc Gueury

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962

Add to Search Bar by Dr. Evil

Rated 5 out of 5 stars 617 reviews

83,458 users

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