I want to use Mojolicious to websites

There are other options which avoid CGI.pm. I have recently changed from hard coding HTML into Perl scripts to using Template. It took a little time to get started with it but it is so much faster and simpler to develop. Pick a framework or templating system and use that, don't even think about CGI.pm

I've been using Template since 2008. It's extremely handy. And it's sort of easy enough to write your own "plugins" as well, like support for multi-language lookups in your database.

...
use base qw(Template::Plugin);

use Template::Plugin;
use Template::Exception;

sub load {
    my ($class, $context) = @_;
    my $self = bless {
    }, $class;

    return $self;
}

sub new {
    my ($self, $context) = @_;
    return $self;
}
...
sub tr {
    my ($self, $data) = @_;

    return $data if($data eq '');

    my $lang = $self->getLang;
    my $trans = tr_translate($lang, $data);

    return $trans;
}
...
[download]

And suddenly, you can call [% tr.tr("Hello World") %] in your Template and have your backend insert the correct klingon translation.

perl -e 'use Crypt::Digest::SHA256 qw[sha256_hex]; print substr(sha256_hex("the Answer To Life, The Universe And Everything"), 6, 2), "\n";'