HTML vs XHTML version statistics

Posted by Mark Rogers on Jul 9, 2015 | 

Web Standards

As part of the online demo at we collect summary statistics about pages scanned by our service. One interesting statistic covers versions of HTML and XHTML in common use. As of July 2015:

HTML Version by Doctype: HTML 5 60%; XHTML 1.0 25%; XHTML 1.1 1%; HTML 4.01 3

HTML vs. XHTML Version Statistics

This is based on a sample size of over 10 million pages on 760,000 web sites

Note: the graph in this post is live, so may show newer data than the words in this post


First posted Feb 2011, updated Jul 2015