Desarrollo web

by MarSanMar

24 Add-ons in this Collection

Ghostery by Ghostery

Rated 4 out of 5 stars 1,469 reviews

1,016,272 users

Increase your browsing privacy, protection, and speed.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 277 reviews

228,304 users

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

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 942 reviews

324,613 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!

Web Developer by chrispederick

Rated 5 out of 5 stars 269 reviews

309,163 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 668 reviews

352,145 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...

Tamper Data by Adam Judson

Rated 4 out of 5 stars 154 reviews

72,905 users

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

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,220 reviews

130,557 users

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

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 379 reviews

179,309 users

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

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 114 reviews

64,749 users

Wappalyzer is a browser extension that identifies software on websites.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 172 reviews

92,776 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 362 reviews

99,159 users

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

Html Validator by Marc Gueury

Rated 4 out of 5 stars 218 reviews

31,753 users

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
http://users.skynet.be/mgueury/mozilla

ShowIP by ShowIP Dev Team

Download Now

Experimental

Rated 3 out of 5 stars 277 reviews

25,345 users

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

LinkChecker by Kevin Freitas

Rated 4 out of 5 stars 82 reviews

11,663 users

Check the validity of links on any webpage.

URL Fixer by Wladimir Palant

Rated 4 out of 5 stars 140 reviews

6,927 users

URL Fixer fixes common typos in URLs entered in the address bar. It will fix errors like "google.con" or "youtube,com". You have the option of being asked to confirm corrections before they are applied.
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