XHTML.ORG

This site provides information related to XHTML. Please visit W3Cs WWW site for additional ("official") information about the W3C Working Group on HTML which is responsible for developing the XHTML specification.

XHTML is an acronym for "eXtensible HyperText Markup Language",  a reformulation of HTML 4.0 as an XML 1.0 application. XHTML provides the framework for future extensions of HTML and aims to replace HTML in the future. 

Current Recommendations and Drafts

W3C has published a number of recommendations based on XHTML, and is working on additional drafts.

• XHTML 1.0 (Recommendation since 26 January 2000)
  "With a wealth of features, XHTML 1.0 is a reformulation of HTML 4.01 in XML, and combines the strength of HTML 4 with the power of XML."
• XHTML Basic (Recommendation since 19 December 2000)
  "The XHTML Basic document type includes the minimal set of modules required to be an XHTML Host Language document type, and in addition it includes images, forms, basic tables, and object support. It is designed for Web clients that do not support the full set of XHTML features; for example, Web clients such as mobile phones, PDAs, pagers, and settop boxes. "
• Modularization of XHTML (Recommendation since 10 April 2001)
  "This Recommendation specifies an abstract modularization of XHTML and an implementation of the abstraction using XML Document Type Definitions (DTDs). This modularization provides a means for subsetting and extending XHTML, a feature needed for extending XHTML's reach onto emerging platforms." 
• XHTML 1.1 - Module-based XHTML (Proposed Recommendation)
  "This Proposed Recommendation defines a new XHTML document type that is based upon the module framework and modules defined in Modularization of XHTML. The purpose of this document type is to serve as the basis for future extended XHTML 'family' document types, and to provide a consistent, forward-looking document type cleanly separated from the deprecated, legacy functionality of HTML 4 that was brought forward into the XHTML 1.0 document types. "
• Modularization of XHTML in XML Schema (Working Draft)
  "The purpose of this document is to describe a modularization framework for languages within the XHTML Namespace using XML Schema. This document provides a complete set of XML Schema modules for XHTML."
• XHTML Events (Working Draft)
  "This specification defines the XHTML Event Module, an XHTML module that provides XML languages with the ability to represent in syntax the semantics of the Document Object Model (DOM) Level 2 event interfaces."

Other Web XHTML Resources

• News about XHTML from W3C
• General XML and SGML resources are at The SGML/XML Web Page. Don't miss the comprehensive news section.
• ZVON offers a useful XHTML reference site.
• The site http://www.xhtml-forms.org/ covers XHTML and extensible forms. 
• XHTMLguru posts documentation, news, and other reference material.
• Introduction to XHTML, with eXamples, at the Webdevelopers virtual library.
• XHTML school offers tutorials, overviews and more.
• VBXHTML maintains a XHTML developers forum.
• The Webmonkey offers another XHTML overview.
• OReilly hosts a XHTML introduction article.
• One more XHTML introduction at JSP Insider.
• Short definition, links - by Stefan Mintert (in German): http://www.mintert.com/was-ist/xhtml/

Selected Books on XHTML

• HTML & XHTML : The Definitive Guide, by Chuck Musciano, Bill Kennedy, published by O'Reilly (Amazon)
• XHTML Black Book by Steven Holzner, gives prompt answers to questions (Amazon)
• XHTML 1.0 Language and Design Sourcebook: The Next Generation HTML, by Ian S. Graham (Amazon)
• Beginning XHTML. By Frank Boumphrey, Dave Raggett, Jenny Raggett, Ted Wugofski, Ted Wugofsi (Amazon)
  Written by people from the W3C working group
• XHTML: Migrating Applications Towards XML: by Simon St.Laurent, B.K. DeLong (Amazon)

Maillist with XHTML discussion

• A public list about HTML, hosted and archived by W3C: http://lists.w3.org/Archives/Public/www-html/
• eGroups has a XHTML maillist, see http://www.egroups.com/group/XHTML-L 

Newsgroups covering XHTML

• Please check DEJANEWS or some similar meta-service. 

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