How can I merge PDF files with Perl?

Question

Using Perl, how can I combine or merge the sample PDF files into a single PDF file?

Answer 1

CAM::PDF can do this quite easily, and has a simple command-line front end to help. Note: I'm the author of that library. Example:

appendpdf.pl file1.pdf file2.pdf outfile.pdf

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From the SYNOPSIS section of the perldoc:

my $anotherpdf = CAM::PDF->new('test2.pdf');
$pdf->appendPDF($anotherpdf);

Answer 2

Why do you need to do it from Perl? Chris has already mentioned CAM::PDF.

If you just need to merge them, pdftk (PDF ToolKit) works just fine. It's a simple command line:

pdftk file1.pdf file2.pdf cat output merged.pdf

Answer 3

You can use the GhostScript utility pdf2ps to convert the PDFs into PostScript files, concatenate the PostScript files, and then use ps2pdf to convert the result back into a PDF.