HTML::Lint 2.02

HTML::Lint can check for HTML errors in a string or file.

SYNOPSIS

my $lint = HTML::Lint->new;
$lint->only_types( HTML::Lint::STRUCTURE );

$lint->parse( $data );
$lint->parse_file( $filename );

my $error_count = $lint->errors;

foreach my $error ( $lint->errors ) {
print $error->as_string, "n";
}

HTML::Lint also comes with a wrapper program called weblint that handles linting from the command line:

$ weblint http://www.cnn.com/
http://www.cnn.com/ (395:83) < IMG SRC="spacer.gif" > tag has no HEIGHT and WIDTH attributes.
http://www.cnn.com/ (395:83) < IMG SRC="goofus.gif" > does not have ALT text defined
http://www.cnn.com/ (396:217) Unknown element < nobr >
http://www.cnn.com/ (396:241) < /nobr > with no opening < nobr >
http://www.cnn.com/ (842:7) target attribute in < a > is repeated

And finally, you can also get Apache::HTML::Lint that passes any mod_perl-generated code through HTML::Lint and get it dumped into your Apache error_log.

[Mon Jun 3 14:03:31 2002] [warn] /foo.pl (1:45) < /p > with no opening < p >
[Mon Jun 3 14:03:31 2002] [warn] /foo.pl (1:49) Unknown element < gronk >
[Mon Jun 3 14:03:31 2002] [warn] /foo.pl (1:56) Unknown attribute "x" for tag < table >