If you make a new plugin, please add the list of returned items to this list.

The returned items are:

pdf plugin:
===========

Date Created
Date Modiified
Int  Pages
Bool Encrypted
and everything else pdfinfo returns as string


png plugin:
===========

type       key             W/A        details
------------------------------------------------------------------------
String     Resolution      -/-
Int        Bitdepth        -/- 
String     Color mode      -/-  
String     Compression     -/-    Compression type. Right now always "deflate"

Other keys correcponding to the pdf comment keys are returned as non-editable
String.

Common keys that are recommended in the png spec:
Title, Author, Description, Copyright, Creation Time, Software, Disclaimer,
Warning, Source, Comment

PostScript plugin:
==================

String  Title
String  Creator
String  CreationDate
String  For
Int     Pages
