WebDev, Design & Analytics

by kozaki

77 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,773 reviews

2,437,929 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 246 reviews

390,507 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 213 reviews

580,217 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 632 reviews

618,181 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 927 reviews

564,104 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

118,621 users

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

User Agent Overrider by muzuiget

Rated 4 out of 5 stars 45 reviews

63,643 users

Override browser user agent string

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

179,851 users

View HTTP headers of a page and while browsing.

Cookies Manager+ by V@no

Rated 4 out of 5 stars 73 reviews

113,317 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.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 332 reviews

156,953 users

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

HttpFox by Martin Theimer

Rated 4 out of 5 stars 161 reviews

103,721 users

An HTTP analyzer addon for Firefox

Google search link fix by Wladimir Palant

Rated 5 out of 5 stars 118 reviews

65,289 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.

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 207 reviews

88,540 users

Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 41 reviews

33,625 users

Simple security audit / Penetration test tool.

Modify Headers by Gareth Hunt

Rated 4 out of 5 stars 71 reviews

229,991 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.
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