Introduction to XHTML
XHTML is a stricter and cleaner version of HTML.
What You Should Already Know
Before you continue you should have a basic understanding of the following:
- HTML and the basics of building web pages
If you want to study HTML first, please read our HTML tutorial.
What Is XHTML?
- XHTML stands for EXtensible HyperText Markup Language
- XHTML is almost identical to HTML 4.01
- XHTML is a stricter and cleaner version of HTML
- XHTML is HTML defined as an XML application
- XHTML is a W3C Recommendation
XHTML is a W3C Recommendation
XHTML 1.0 became a W3C Recommendation January 26, 2000.
Stay updated with the latest W3C recommendations in our W3C tutorial.
All Browsers Support XHTML
XHTML is compatible with HTML 4.01. All browsers support XHTML.
W3Schools Has Converted To XHTML
W3Schools was completely rewritten to XHTML 1.0 in 1999.
A click on this symbol: 
validates the XHTML part of this page.
A click on this symbol: 
validates the CSS part of this page.
About This Tutorial
The next chapters of this tutorial will explain:
- Why you should use XHTML
- The syntax of XHTML
- How W3Schools was converted to XHTML
- XHTML validation
- XHTML modularization
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