perlfirefoxwww-mechanizemozrepl

Is it possible to take a webpage's screenshot without a graphical interface?

I have interest to programmatically take a screenshot of a webpage using perl. I have come across this solution: 

use WWW::Mechanize::Firefox;
use Path::Class qw/file/;

my $mech = WWW::Mechanize::Firefox->new(
  bufsize => 10_000_000, # PNGs might become huge
);
$mech->get('http://www.stackoverflow.com/');

my $fh = file( 'test.png' )->open( '> :raw' );
print $fh $mech->content_as_png();

but when I try to run this code I get:

Failed to connect to , problem connecting to "localhost", port 4242: Connection refused at /usr/local/share/perl/5.20.2/MozRepl/Client.pm line 144

It was suggested that this failure is due to a closed port (Debian Jessie, Apache2, Perl 5.20), or MozRepl not installed or not configured correctly.

The Debian server is a command line only, and there is no graphic interface otherwise. When I run cpan WWW::Mechanize::Firefox I get at the end: 

CPAN: Storable loaded ok (v2.49_01)
Reading '/root/.cpan/Metadata'
  Database was generated on Fri, 22 Jul 2016 17:53:33 GMT
CPAN: Module::CoreList loaded ok (v5.20150214)
WWW::Mechanize::Firefox is up to date (0.79).

And when I run cpan MozRepl, I get at the end: 

CPAN: Storable loaded ok (v2.49_01)
Reading '/root/.cpan/Metadata'
  Database was generated on Fri, 22 Jul 2016 17:53:33 GMT
CPAN: Module::CoreList loaded ok (v5.20150214)
MozRepl is up to date (0.06).

So as the title asks, can the above code work if there is no graphical interface? If yes, what can I do to debug and solve this issue?

Solution

  • 2 solutions: