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HTML::Tidy5 - HTML validation in a Perl object


Version 1.06


    use HTML::Tidy5;

    my $tidy = HTML::Tidy5->new( {config_file => 'path/to/config'} );
    $tidy->ignore( type => TIDY_WARNING, type => TIDY_INFO );
    $tidy->parse( "foo.html", $contents_of_foo );

    for my $message ( $tidy->messages ) {
        print $message->as_string;


HTML::Tidy5 is an HTML checker in a handy dandy object. It's meant as a replacement for HTML::Lint. If you're currently an HTML::Lint user looking to migrate, see the section "Converting from HTML::Lint".



Everything else is an object method.



Create an HTML::Tidy5 object.

    my $tidy = HTML::Tidy5->new();

Optionally you can give a hashref of configuration parms.

    my $tidy = HTML::Tidy5->new( {config_file => 'path/to/tidy.cfg'} );

This configuration file will be read and used when you clean or parse an HTML file.

You can also pass options directly to tidy.

    my $tidy = HTML::Tidy5->new( {
                                    output_xhtml => 1,
                                    tidy_mark => 0,
                                } );

See tidy -help-config for the list of options supported by tidy.

The following options are not supported by HTML::Tidy5:

  • quiet


Returns the messages accumulated.


Clears the list of messages, in case you want to print and clear, print and clear. If you don't clear the messages, then each time you call parse() you'll be accumulating more in the list.

ignore( parm => value [, parm => value ] )

Specify types of messages to ignore. Note that the ignore flags must be set before calling parse(). You can call ignore() as many times as necessary to set up all your restrictions; the options will stack up.


    Specifies the type of messages you want to ignore, either info or warnings or errors. If you wanted, you could call ignore on all three and get no messages at all.

        $tidy->ignore( type => TIDY_WARNING );
  • text => qr/regex/

  • text => [ qr/regex1/, qr/regex2/, ... ]

    Checks the text of the message against the specified regex or regexes, and ignores the message if there's a match. The value for the text parm may be either a regex, or a reference to a list of regexes.

        $tidy->ignore( text => qr/DOCTYPE/ );
        $tidy->ignore( text => [ qr/unsupported/, qr/proprietary/i ] );

parse( $filename, $str [, $str...] )

Parses a string, or list of strings, that make up a single HTML file.

The $filename parm is only used as an identifier for your use. The file is not actually read and opened.

Returns true if all went OK, or false if there was some problem calling tidy, or parsing tidy's output.

clean( $str [, $str...] )

Cleans a string, or list of strings, that make up a single HTML file.

Returns the cleaned string as a single string.


Returns the version of the underling tidy library.


HTML::Tidy5 requires that the html-tidy be installed on your system. You can probably obtain html-tidy through your distribution's package manager (make sure you install the development package with headers). You can also check the html-tidy home page is


HTML::Tidy5 is different from HTML::Lint in a number of crucial ways.

  • It's not pure Perl

    HTML::Tidy5 is mostly a happy wrapper around the html-tidy library.

  • The real work is done by someone else

    Changes to tidy may come down the pipe that I don't have control over. That's the price we pay for having it do a darn good job.

  • It's no longer bundled with its Test:: counterpart

    HTML::Lint came bundled with Test::HTML::Lint, but Test::HTML::Tidy5 is a separate distribution. This saves the people who don't want the Test:: framework from pulling it in, and all its prerequisite modules.


Please report any bugs or feature requests at the issue tracker on github I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

Please do NOT use


You can find documentation for this module with the perldoc command.

    perldoc HTML::Tidy5

You can also look for information at:


Thanks to Rufus Cable, Jonathan Rockway, and Robert Bachmann for contributions.


Andy Lester, <andy at>


Copyright (C) 2005-2018 by Andy Lester

This library is free software. You may modify or distribute it under the Artistic License v2.0.