For thos of you who do not know, W3C Markup Validation Service is a free service that checks documents like HTML and XHTML for conformance to W3C Recommendations and other standards. Many of you may want to provide a link on your website directly to the w3 validator page so that your users can check out if your site is in compliance with all the html and standards. This builds your users' or clients' confidence. That you are capable of writing clean, efficient, and right codes.
Anyway, to show your readers that you have taken the care to create an interoperable Web page, you may display an icon on any page that validates. Here is the HTML you should use to add this icon to your Web page:
<p>
<a href="http://validator.w3.org/check?uri=referer"><img
src="http://www.w3.org/Icons/valid-xhtml10"
alt="Valid XHTML 1.0!" height="31" width="88" /></a>
</p>
Thanks to this code, you will be able to re-validate your Web page by following the link (click on the image). If you like, you can download a copy of the image in above code to keep in your local web directory, and change the HTML fragment above to reference your local image rather than the one on this server.
Similarly for CSS:
To show your readers that you've taken the care to create an interoperable Web page, you may display this icon on any page that validates. Here is the HTML you could use to add this icon to your Web page:
<p>
<a href="http://jigsaw.w3.org/css-validator/">
<img style="border:0;width:88px;height:31px"
src="http://jigsaw.w3.org/css-validator/images/vcss"
alt="Valid CSS!">
</a>
</p>
If you would like to create a link to the CSS validation result page for your website directly to make it easier to re-validate the page in the future or to allow others to validate your page, the URI is:
[http://jigsaw.w3.org/css-validator/validator?uri=http://www.yoursite.com/yourcss.css]
or
[http://jigsaw.w3.org/css-validator/check/referer] (for HTML/XML document only)
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