WebDev, Design & Analytics

by kozaki

83 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,781 reviews

2,234,452 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

360,787 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 215 reviews

529,834 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

583,832 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

523,556 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

110,822 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

268,738 users

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

Cookies Manager+ by V@no

Rated 4 out of 5 stars 73 reviews

106,289 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

165,144 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 333 reviews

142,906 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 47 reviews

65,435 users

Override browser user agent string

User-Agent Switcher by Linder

Rated 4 out of 5 stars 6 reviews

20,955 users

Quickly and easily switch between popular user-agent strings.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

93,615 users

An HTTP analyzer addon for Firefox

Google search link fix by Wladimir Palant

Rated 5 out of 5 stars 123 reviews

63,202 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.

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 41 reviews

31,677 users

Simple security audit / Penetration test tool.
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