You probably can use Gtk2::Webkit, as shown in Perl Web Browser using Gtk2 and WebKit. The problem with automating it is to detect when the page is fully loaded before taking your screenshot. To solve that problem, you can setup callbacks on certain available signals, as shown in Another YouTube Video Downloader using GtkWebkit: 
my $view = Gtk2::WebKit::WebView->new;
$view->signal_connect( 'notify::progress' => \&notify_progress, undef 
+);
$view->signal_connect( 'load_finished' => \&load_finished, undef );

[download]

Gtk2 can make PDF screenshots.

By the way, Gtk2::Webkit's capabilities have been greatly enhanced by the recent addition of Glib::Introspection. You might want to ask on the Perl/Gtk2 maillist on how to use Introspection, or whether it could help in your case.

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

In reply to Re: Is Perl capable of doing this? by zentara
in thread Is Perl capable of doing this? by anabelljc

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.