MrYarbles' Favorites

by MrYarbles

18 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,679 reviews

4,809,537 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,793 reviews

2,211,735 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Awesome Screenshot Plus - Capture, Annotate & More by Diigo Inc.

Rated 4 out of 5 stars 1,099 reviews

216,521 users

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

Web Developer by chrispederick

Rated 5 out of 5 stars 217 reviews

557,677 users

The Web Developer extension adds various web developer tools to the browser.

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,191 reviews

251,768 users

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 157 reviews

169,414 users

View HTTP headers of a page and while browsing.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

56,781 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.

YSlow by YSlow

Rated 3 out of 5 stars 195 reviews

98,243 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. is the official open source website.

CacheViewer by benki

Rated 4 out of 5 stars 220 reviews

53,554 users

This extenion is GUI Front-end of "about:cache"...

Clear Cache Button by Chris Holtz

Rated 4 out of 5 stars 130 reviews

85,234 users

Adds a clear cache toolbar button. After installing the extension, find the clear cache button in the toolbar customization...

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 52 reviews

30,832 users

Firebug plugin for jQuery development

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 4 out of 5 stars 101 reviews

13,978 users

Pixel Perfect is a Firefox extension that allows web developers and designers to easily overlay a web composition with semi-transparent layers (images). These layers can be consequently used for per pixel comparison between the page and a layer.

Download Statusbar by C.J.

Download Now


Rated 4 out of 5 stars 1,462 reviews

462,019 users

View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing.

Thanks Tekzilla for your awesome review! Click here to see their video:

QuickProxy by Ozzie-

Rated 4 out of 5 stars 208 reviews

22,808 users

Statusbar button to turn the proxy on and off with a single click.

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 61 reviews

4,548 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10
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