XHTML

XHTML

eXtensible HyperText Markup Language (or eXtensible HTML). XHTML is a form of HTML that meets the XML 1.0 specification. It is commonly regarded as the natural successor to HTML. It is defined by a draft specification from W3C.

XHTML files often (but not always) have the file extension .xhtml.

For more information see:

• www.w3schools.com/xhtml/xhtml_intro.asp - Introduction to XHTML
• www.w3.org/TR/2000/REC-xhtml1-20000126/ - W3C XMP specification 1.0
• www.w3.org/TR/xhtml1/#diffs - The differences between XHTML and HTML 4.
• http://everything.explained.at/xhtml/ - XHTML explained.