WebDev, Design & Analytics

by kozaki

83 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,783 reviews

2,426,336 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...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 248 reviews

383,639 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Web Developer by chrispederick

Rated 5 out of 5 stars 216 reviews

574,700 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 634 reviews

607,360 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 930 reviews

562,083 users

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Tamper Data by Adam Judson

Rated 4 out of 5 stars 130 reviews

118,122 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 302 reviews

292,697 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

Cookies Manager+ by V@no

Rated 4 out of 5 stars 73 reviews

111,199 users

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

177,780 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 333 reviews

155,885 users

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

User Agent Overrider by muzuiget

Rated 4 out of 5 stars 48 reviews

67,236 users

Override browser user agent string

User-Agent Switcher by Linder

Rated 4 out of 5 stars 6 reviews

22,448 users

Quickly and easily switch between popular user-agent strings.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

102,681 users

An HTTP analyzer addon for Firefox

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 41 reviews

33,580 users

Simple security audit / Penetration test tool.

Google search link fix by Wladimir Palant

Rated 5 out of 5 stars 123 reviews

65,568 users

This extension prevents Google, Yahoo and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.
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