What I want is to edit PDF file, and remove digital signature form field. I would like to do that without buying Adobre Pro liscence. I remember some time ago I opened PDF file in text editor and saw some scripting language, so I am wondering if I can edit PDF file directly in text editor, remove the proper lines from PDF, save and that's it! My question: - Is that possible? - Are there any document checksums, or some existing number of objects per page in PDF file? - If yes, so what should I look for, and what should I change?
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How to remove digital signature from PDF
How to verify digital signatures have been removed
You can use the command line tool
pdfsig:pdfsig my-document.pdfThe output should include this sentence: