W3C: Standards and Guidelines (HTML)

W3C - Standards and Guidelines (HTML)

Standards - W3C
https://www.w3.org/standards/
Latest Version of HTML
https://www.w3.org/TR/html/

HTML 5
http://www.w3.org/TR/html5/

HTML 5.3: W3C Working Draft, 09 August 2018
https://www.w3.org/TR/html53/

HTML 5.2: W3C Recommendation, 14 December 2017
https://www.w3.org/TR/html52/

HTML 5.1 2nd Edition: W3C Recommendation 3 October 2017
https://www.w3.org/TR/html51/

HTML5: A vocabulary and associated APIs for HTML and XHTML
W3C Recommendation 28 October 2014
https://www.w3.org/TR/html50/

HTML5 Differences from HTML4
https://www.w3.org/TR/html5-diff/

HTML 4

Latest version of HTML 4
https://www.w3.org/TR/html4/

HTML 4.01 Specification
W3C Recommendation 24 December 1999, superseded 27 March 2018
https://www.w3.org/TR/html401

XHTML

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)
W3C Recommendation 26 January 2000, revised 1 August 2002, superseded 27 March 2018
https://www.w3.org/TR/xhtml1/

XHTML™ 2.0
W3C Working Group Note 16 December 2010

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