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How to combine PDFs that have optional content? #199

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amorimlucas opened this issue Aug 28, 2021 · 1 comment

amorimlucas commented Aug 28, 2021

I'm trying to combine multiple PDFs where one or more have optional content. When I try to do so, I get the following error:

Couldn't merge PDF: Optional Content PDF files aren't supported and their pages cannot be safely extracted.

Does anyone know of a way to combine PDFs with optional content? Thank you.

amorimlucas changed the title ~~How to combine a PDF that has optional content?~~ How to combines PDF that have optional content?

amorimlucas changed the title ~~How to combines PDF that have optional content?~~ How to combine PDFs that have optional content?

OlexYakov commented Mar 23, 2022

You could have read the Known Limitations section.

Sometimes the CombinePDF will raise an exception even if the PDF could be parsed (i.e., when PDF optional content exists)... I find it better to err on the side of caution, although for optional content PDFs an exception is avoidable using CombinePDF.load(pdf_file, allow_optional_content: true).

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