CSS Validator

By Michael Langley Free Editors' Rating
The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.

Editors' Review

Download.com Staff Feb 27, 2009

Instead of offering a way to validate CSS on its own, this free Firefox add-on is really a link that directs you to the W3C Web site.

You'll find the link in your context menu. Just visit a Web page, and, if it contains an associated-CSS file, you can click on the Validate CSS link. It then opens another tab in your Firefox browser to display the CSS information directly from the W3C site, including any errors found. It worked without issue for us.

If you're a Web developer, this free add-on will save you the extra step of having to manually enter a URL each time you want to validate a Web page.

Full Specifications

What's new in version 3.0.0

General

Release April 23, 2010
Date Added June 28, 2008
Version 3.0.0

Operating Systems

Operating Systems Windows, Windows XP, Windows Vista
Additional Requirements Windows XP/Vista, Firefox 1.0 - 3.6

Popularity

Total Downloads 1,107
Downloads Last Week 0
Report Software

Related Software

Ghostery (for Firefox) logo

Ghostery (for Firefox)

Free
Ghostery (for Firefox)
MaskMe for Firefox logo

MaskMe for Firefox

Free
MaskMe for Firefox
WOT (Web of Trust) for Firefox logo

WOT (Web of Trust) for Firefox

Free
WOT (Web of Trust) for Firefox
NoScript logo

NoScript

Free
NoScript

Developer's Description

Validates a page using the W3C CSS Validator. Adds an option to the right-click context menu and to the Tools menu to allow for easy validation of the CSS of the current page. Opens the results in a new tab. Will only work on pages that have a CSS file associated. For example, it will work with http://www.w3.org/, as the URL has a CSS file.

Promo image for CNET Shopping

Get the best price on everything

Shop your favorite products and we’ll find the best deal with a single click. Designed to make shopping easier.