PDFs are not intended to be modified. Preview and other readers use hacks to do ... | Hacker News

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		YetAnotherNick on Dec 16, 2020 \| parent \| context \| favorite \| on: Preview in macOS Big Sur is destroying PDFs PDFs are not intended to be modified. Preview and other readers use hacks to do the work. In general don't modify the PDF and if you really want to do it buy Acrobat reader.

tonyedgecombe on Dec 16, 2020 [–]

The PDF file format has a mechanism in it for modifying documents.

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