Manipulating PDF

Help & Support
1

Has anyone seen any good shards to manipulate PDFs? I found a few to create PDFs from scratch, but I need to programmatically modify existing documents — split by page, concatenate multiple PDFs, superimpose content, etc.

2

I would suggest to wrap pdftk cli if cover your needs. PDFtk Server Examples

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3

This thread might have relevant information: Let's work on pdf.cr

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