Web Standards Kit

by smartpixel

15 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,770 reviews

2,517,996 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 213 reviews

609,574 users

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

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 925 reviews

587,659 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!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

273,357 users

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

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

185,910 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 330 reviews

162,343 users

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

YSlow by YSlow

Rated 3 out of 5 stars 189 reviews

116,529 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

Html Validator by Marc Gueury

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 Firefox 23+, you need 0.958 (under review)
http://users.skynet.be/mgueury/mozilla

FirePHP by cadorn

Rated 4 out of 5 stars 45 reviews

58,106 users

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 33 reviews

38,214 users

CodeBurner is a Firefox add-on that integrates with Firebug, to extend it with reference material for HTML and CSS.

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 51 reviews

35,460 users

Firebug plugin for jQuery development

Screengrab by Andy M

Rated 4 out of 5 stars 590 reviews

29,830 users

Screengrab! saves webpages as images... but not for new versions of Firefox.

FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.

Therefore, Screengrab is EOL.

Accessibility Evaluation Toolbar by Jon Gunderson

Rated 3 out of 5 stars 15 reviews

7,294 users

Support web developers in testing web resources for accessibility features.

SenSEO by Nico Steiner

Rated 4 out of 5 stars 41 reviews

7,664 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.

HeadingsMap by Rumoroso

Rated 5 out of 5 stars 15 reviews

3,573 users

The extension generates a documentmap or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.

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