Web Pro

by webilu

76 Add-ons in this Collection

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,392 reviews

199,907 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 19 reviews

53,574 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.

Modify Headers by Gareth Hunt

Rated 4 out of 5 stars 72 reviews

108,975 users

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

ScrapBook by Gomita

Rated 4 out of 5 stars 855 reviews

156,019 users

Helps you to save Web pages and organize the collection.

JSONView by Ben Hollis

Rated 5 out of 5 stars 134 reviews

89,248 users

View JSON documents in the browser.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 341 reviews

129,510 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Mozilla Archive Format, with MHT and Faithful Save by Christopher Ottley, Paolo Amadini

Rated 4 out of 5 stars 277 reviews

175,352 users

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

HttpFox by Martin Theimer

Rated 4 out of 5 stars 164 reviews

81,041 users

An HTTP analyzer addon for Firefox

FEBE by Chuck_Baker

Rated 4 out of 5 stars 644 reviews

119,037 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 98 reviews

64,562 users

Wappalyzer is a browser extension that identifies software on websites.

YSlow by YSlow

Rated 3 out of 5 stars 199 reviews

84,242 users

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

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

XPath Checker by Brian Slesinsky

Rated 5 out of 5 stars 18 reviews

23,424 users

An interactive editor for XPath expressions.

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 85 reviews

124,224 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Add to Search Bar by Dr. Evil

Rated 5 out of 5 stars 617 reviews

80,623 users

Make any pages' search functionality available in the Search Bar (or "search box")...
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
Results 1630 of 76

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

Recently Viewed