This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

XHTML5 Support


This plugin is developed at Shepherd Interactive
for the benefit of the community. No support is available. Please post any questions to the support forum.

Allows templates to serve XHTML5 markup by adding the necessary JavaScript shim for IE7+, and for IE6 by converting all new elements to divs and spans with class names that contain the original HTML5 element name prefixed by “html5-“, for example: <article> becomes <div class="html5-article">
and <time> becomes <span class="html5-time">

If the browser supports XHTML, the content is served with the application/xhtml+xml
MIME type. This can be disabled by placing remove_filter('option_html_type', 'xhtml5support_filter_html_type')
in functions.php.

Note that print stylesheets do not get applied to IE7+ even with the shim, so if you are relying on the ability for IE users to print properly-styled pages, you must force the IE6 renaming behavior for all versions of IE by doing update_option('xhtml_support_add_msie_shims', false);

Contributors & Developers

“XHTML5 Support” is open source software. The following people have contributed to this plugin.

Translate “XHTML5 Support” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


2010-02-12: 0.2.4

  • Removed pre from the list of new HTML5 block elements

2010-01-22: 0.2.3

  • Preventing behavior when at a “/wp-*” url
  • Preventing xhtml5support_filter_html_type if empty($_SERVER['HTTP_ACCEPT'])

2009-09-28: 0.2.2

  • Initial release