TEST:html5

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HTML5

Summary

HTML5 is the newest revision of the HyperText Markup Language. It updates and replaces HTML 4.01 and XHTML 1.1. It is being standardized at W3C, and jointly developed by W3C and WHATWG. It is currently in W3C's Candidate Recommendation phase, and is expected to be finalized as a Recommendation in 2014.

For more information, there is a developer-friendly version of the spec, HTML: The Markup Language, and a HTML5 differences from HTML4 document to find out what's changed.

Explore our HTML5 docs

HTML learning material

Our HTML tutorials and concepts have been updated to cover HTML5 features in appropriate places.

HTML key topics

A guide to key additions to HTML5, such as error handling and the heading parsing algorithm.


New elements

A list of the new elements available in HTML5.

Changed or obsolete elements

A reference guide to all the elements that have been redefined or made obsolete in HTML5.

New attributes

A list of the new attributes available in HTML5.

Changed or obsolete attributes

A reference guide to all the attributes that have been redefined or made obsolete in HTML5.

New APIs

A reference guide to all the attributes that have been redefined or made obsolete in HTML5.


Unchanged elements and attributes

Finally, a list of the elements and attributes that remain unchanged in HTML5.



Note: If you are completely new to web development, you may want to review Web development for beginners.

Contributing to HTML5

HTML5 development takes place on the HTML Working Group Mailing Lists. These are a good place to start if you want to suggest new features or provide feedback. For news and more general information, consult the W3C HTML home page.