Get only what you want from html using HTML::TreeBuilder and HTML::Element

html_elements.pl

#!/usr/bin/env perl
#Mojo::DOM and Mojo::UserAgent just rock, but sometimes you are not allowed to use them.
use 5.14.2;
use HTML::TreeBuilder;
my $url  = 'http://contao.org/en/extension-list/view/i18nl10n.html';
my $root = HTML::TreeBuilder->new_from_url($url);
$root->eof();    # done parsing for this tree
my $h1 = $root->find_by_tag_name('h1');
say $h1->as_trimmed_text;    #h1

#get only what we want as a well formated, pretty xhtml chunk
say $root->find_by_attribute('class', 'extension')->look_down(
  _tag    => "td",
  colspan => 4,
)->as_HTML('<>&', '  ', {});
$root->destroy();