For work

by Allexxandra

20 Add-ons in this Collection

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 965 reviews

469,502 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!

Flagfox by Dave G

Rated 5 out of 5 stars 656 reviews

490,812 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...

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

267,948 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 354 reviews

142,788 users

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

SeoQuake SEO extension by SeoQuake Team

Rated 4 out of 5 stars 210 reviews

67,940 users

Accelerate your SEO efforts on the fly. SEOquake is a free plugin for browsers that provides you with key SEO metrics for a specific page, along with other useful tools such as SEO Audit and many others.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 215 reviews

52,275 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

Yandex.Bar by Yandex

Download Now

Experimental

Rated 2 out of 5 stars 364 reviews

447,079 users

Advanced toolbar for Firefox

Resurrect Pages by Anthony Lieuallen

Rated 5 out of 5 stars 64 reviews

21,114 users

Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...

IE View by EmmaSawyers, searchresults

Rated 3 out of 5 stars 153 reviews

66,163 users

Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.

LinkChecker by Kevin Freitas

Rated 4 out of 5 stars 78 reviews

16,759 users

Check the validity of links on any webpage.

Accessibility Evaluation Toolbar by Jon Gunderson

Rated 4 out of 5 stars 17 reviews

5,905 users

Support web developers in testing web resources for accessibility features.

SenSEO by Nico Steiner

Rated 4 out of 5 stars 41 reviews

5,840 users

SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.

ErrorZilla Plus by Crend King

Rated 4 out of 5 stars 50 reviews

1,760 users

This extension is a replacement of Firefox official error page, which adds some useful tools to aid your troubleshooting.

The tools include:
- Google Cache (view the page cached by Google)
- Coralize (use Coral CDN proxy to connect again)
- Wayback ...

404-Error ? by Lazar Kovacevic

Rated 4 out of 5 stars 16 reviews

1,050 users

Ever been annoyed by the '404 Error' or a more understandable one 'File Not Found'? Ever bookmarked your favorite page but few months later when you finally had time to read it in detail, you couldn't find it?

If a page was (re)moved and now shows ...

Advanced Dork: by C-P

Rated 5 out of 5 stars 21 reviews

494 users

Advanced Dork: gives quick access to Google's Advanced Operators directly from the context menu...
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