Markup Developer Addons

egilea: Vlad Random

19 Add-ons in this Collection

Firebug egilea: Joe Hewitt, Jan Odvarko, besteak

Rated 5 out of 5 stars 1.783 berrikuspen

2.245.657 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 egilea: chrispederick

Rated 5 out of 5 stars 216 berrikuspen

535.299 users

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

Webpage Screenshot in Firefox (♥♥♥♥♥) egilea: susbox

Rated 5 out of 5 stars 432 berrikuspen

254.652 users

FireShot Webpage Screenshots captures pages entirely. Demo:

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

YSlow egilea: YSlow

Rated 3 out of 5 stars 192 berrikuspen

100.541 users

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

Html Validator egilea: Marc Gueury

Rated 5 out of 5 stars 198 berrikuspen

56.361 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

Firefinder for Firebug egilea: Robert Nyman

Rated 3 out of 5 stars 28 berrikuspen

22.288 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression

Print Preview egilea: David Snyder

Rated 3 out of 5 stars 25 berrikuspen

2.485 users

Note from Mozilla: This add-on has been discontinued. Try Print Preview (Updated) instead.

Creates a Print Preview toolbar button and context menu item.

Dust-Me Selectors egilea: brothercake

Rated 4 out of 5 stars 76 berrikuspen

15.703 users

Dust-Me Selectors is development tool to remove unused CSS selectors.

Print/Print Preview egilea: Patrick H. Lauke

Rated 4 out of 5 stars 59 berrikuspen

29.894 users

Replace the default "Print" button with the Mozilla Suite style "Print/Print Preview" toolbar button/menu...

Pixel Perfect egilea: Mike Buckley, Lorne Markham, besteak

Rated 4 out of 5 stars 101 berrikuspen

13.540 users

Pixel Perfect is a Firefox/Firebug extension that allows web developers and designers to easily overlay a web composition over top of the developed HTML.

Screengrab egilea: Andy M

Rated 4 out of 5 stars 591 berrikuspen

25.502 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.

Firecookie egilea: Jan Odvarko

Rated 4 out of 5 stars 61 berrikuspen

4.306 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10

Inline Code Finder for Firebug egilea: Robert Nyman

Rated 4 out of 5 stars 14 berrikuspen

9.111 users

Inline Code Finder is an add-on to Firebug, to be able to find HTML elements with any of the below issues:

* Inline JavaScript events
* Inline style
* javascript: links

Detailed description can be found at

WAVE Toolbar egilea: WebAIM

Deskargatu orain


Rated 4 out of 5 stars 21 berrikuspen

4.440 users

WAVE Web Accessibility Evaluation Toolbar

SenSEO egilea: Nico Steiner

Rated 4 out of 5 stars 41 berrikuspen

6.533 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.
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