XHTML Tutorial

XHTML is a stricter and cleaner version of HTML. In this tutorial you will learn the difference between HTML and XHTML. We will also show you how W3Schools.com was converted into XHTML. Start learning XHTML now!

XHTML Quiz Test

Test your XHTML skills at W3Schools!

Start the XHTML Quiz!

XHTML References

At W3Schools you will find complete references about tags, standard attributes, standard events, colornames, entities, character-sets, URL encoding, language codes, HTTP messages, and more.

XHTML 1.0 Reference

W3Schools Exam

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The HTML Certificate documents your knowledge of HTML, XHTML, and CSS.

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The PHP Certificate documents your knowledge of PHP and SQL (MySQL).

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