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There seem to be a growing plethora of Perl modules for creating and manipulating PDF files. PDF::API2 is 'The Next Generation' of Text::PDF::API which initially provided a nice API around the Text::PDF::* modules created by Martin Hosken.
(which may be extended in the future)
Works with more than one PDF file open at once
It presents a object-oriented API to the user
Modification of existing PDF Documents
Import Pages from existing PDF Documents
the 14 base PDF Core Fonts
a subset of the base PDF CJK Fonts
a subset of the Microsoft Webfonts (not embedded)
Adobe-Type1 Fonts in both ascii and binary format (.pfa/pfb)
TrueType fonts (.ttf)
OpenType Fonts with TrueType Outlines (.ttf)
OpenType Fonts with Postscript Outlines (.otf)
'Joint Photographics Experts Group' images (.jpeg)
'Portable Network Graphics' images (.png)
'Graphics Interchange Format' images (.gif)
'Tagged Image File Format' images (.tiff)
'Portable AnyMap' images (.pbm/pgm/ppm)
(as an absolute minimum)
Perl 5.8.x - for correct utf8 handling at language level (5.8.4+ recommended)
Encode, Encode::* - for encoding/unicode handling
Compress::Zlib - compression of pdf object streams
The following files are available:
PDF::API2 Modules recommended for production systems are here.
PDF::APIx::* Modules with bleeding edge implementations recommended for perl-monks are here.
Historic Versions may be retrieved here.
PDF-API2 for Fun and Profit (APW2005 Presentation may be retrieved here.
It seams that a Wikipedia will evolve here.