#!/usr/bin/env perl
use strict; use warnings;
use PDF::API2;
 
my $filename = shift || 'test.pdf';
my $oldpdf = PDF::API2->open(/downloads/YuruguOCR.pdf);
my $newpdf = PDF::API2->new;
 
for my $page_nb (1..$oldpdf->pages) {
  my ($page, @cropdata);
 
  $page = $newpdf->importpage($oldpdf, $page_nb);
  @cropdata = $page->get_mediabox;
  $cropdata[2] /= 2;
  $page->cropbox(@cropdata);
  $page->trimbox(@cropdata);
  $page->mediabox(@cropdata);
 
  $page = $newpdf->importpage($oldpdf, $page_nb);
  @cropdata = $page->get_mediabox;
  $cropdata[0] = $cropdata[2] / 2;
  $page->cropbox(@cropdata);
  $page->trimbox(@cropdata);
  $page->mediabox(@cropdata);
}
 
(my $newfilename = $filename) =~ s/(.*)\.(\w+)$/$1.clean.$2/;
$newpdf->saveas('$newfilename');
 
__END__