Mike,

So I'm browsing Defaults.pm and see something quite interesting ...

    # --------------------------------------------------- #
    # MIME-Viewer for online to html converter
    # --------------------------------------------------- #
    # (e. g. xlhtml (xls2html), http://chicago.sourceforge.net/xlhtml/)
#    $Self->{'MIME-Viewer'}->{'application/excel'} = 'xlhtml';
    # MIME-Viewer for online to html converter
    # (e. g. wv (word2html), http://wvware.sourceforge.net/)
#    $Self->{'MIME-Viewer'}->{'application/msword'} = 'wvWare';
    # (e. g. pdftohtml (pdf2html), http://pdftohtml.sourceforge.net/)
#    $Self->{'MIME-Viewer'}->{'application/pdf'} = 'pdftohtml -stdout -i';
    # (e. g. xml2html (xml2html))
#    $Self->{'MIME-Viewer'}->{'text/xml'} = $Self->{Home}.'/scripts/tools/xml2html.pl';

What could it be?
added to Config.pm
$Self->{'MIME-Viewer'}->{'application/pdf'} = 'pdftohtml -stdout -i'; 

then 

apt-get install poppler-utils 

and checked a linked pdf. There's an interesting little monitor icon there. click - rendered.

Thought that might be of interest to you.

On Mon, Jul 16, 2012 at 10:52 AM, Michiel Beijen <michiel.beijen@gmail.com> wrote:
It should just open in a popup. PDF.js renders multi-pages perfectly
fine, it is just a nice way of not needing to start Adobe Reader or
Document Viewer to read a PDF.
See for example: http://mozilla.github.com/pdf.js/web/viewer.html
--
Mike

On Sun, Jul 15, 2012 at 11:59 PM, Gerald Young <crythias@gmail.com> wrote:
> Michiel, What is in your mind regarding the rendering viewing portal for a
> pdf? (How do you want the interface to be for a multi-page pdf?) Lightbox
> ish? inline like scribd? replace current page? New window?
>
> On Sun, Jul 15, 2012 at 3:07 PM, Michiel Beijen <michiel.beijen@gmail.com>
> wrote:
>>
>> Hi!
>>
>> On Sat, Jul 14, 2012 at 2:21 AM, Gerald Young <crythias@gmail.com> wrote:
>> > Slightly out of the ordinary thing, but I had fun with it ...
>> > How to add Lightbox2 to OTRS so when you click on an image attachment,
>> > it
>> > does that popover effect.
>> > http://forums.otterhub.org/viewtopic.php?f=60&t=16302
>>
>> Nice. I had the idea of doing the same but than with PDF.js <
>> https://github.com/mozilla/pdf.js > so you can show PDF attachments
>> inside the browser, provided you have a decent browser. Would be
>> awesome, but did not get to it; if you feel like it, would be great!
>> -
>> Mike
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