module for (X)HTML validation

 HTML::Tidy is a Perl module useful for performing cleanup and providing basic
 validation of input. It is based on Perl bindings to the HTML Tidy Project,
 also known as libtidy; for details, see: <URL:http://tidy.sourceforge.net/>.
 .
 This module is intended to replace HTML::Lint and includes documentation for
 easing the migration from that module.