in reply to PDF Modules Seeking Recommendations
Check out also PDF::Reuse. Its source code is quite obscure and binary-stream oriented, but it does what it says. Allows to extract and insert text, images, barcodes, single pages, ...
It has a module approach (many functions and no main object) rather than being OOP.
In the end I found it didn't suit my needs, and I decided to contribute to PDF::ReportWriter, which does other things.
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