How to Programmatically Inject JavaScript in PDF files?

Question

How to Programmatically Inject JavaScript in PDF files?

Can it be done without Adobe Professional?

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My goal is: I want to show up the print dialog immed

Answer 1

I've done studing the PDF Specifications.

Turns out that the PDF file format isn't that hard.

It has a nice feature that ables to modify the document just by appending new content in the end of the file.

If you are trying to do the same thing... don't be affraid! go and look at the specs.