I have created some 80x15 pixels web badges to indicate successful W3C validation. This work is licensed under a License. You are free to use them wherever you want.
CC SA Attribution terms: At your sole discretion, you can use these images in your site for display purposes without further limitations. If you're creating derivative works, respect the license and clearly specify the original author (João Ventura). In either case, if you're feeling generous, provide a link back to this page. You're not allowed under any circumstances to hot-link these images from your site.
The W3C logo is a registered trademark of the World Wide Web Consortium (W3C) and is used under a loose interpretation of the terms of use for W3C Validator logos. The original icons can be found in W3C's Quality Assurance area.
W3C HTML Valid
"Gold"
"Blue"
W3C XHTML Valid
"Gold"
"Blue"
W3C CSS Valid
"Gold"
"Blue"
W3C RSS Valid
"Gold"
"Blue"
W3C SVG Valid
"Gold"
"Blue"
Any Browser Campaign
www is deprecated