Extract Pages With Digital Signatures

Digital Signatures use a checksum to validate that the file has not been modified since it was signed. Usually, the file gets locked after signing so page extraction is impossible. You don't want anyone swapping out pages in your signed contract.. right?

Anyway, assuming you are the signer or the file was not locked, when you modify the file, the signature is no longer valid. This includes extracted pages. Extracted pages are actually a NEW file, it's not possible to keep the signature and have it be valid or meaningful in any way.

You'll need to resign the files after they have been burst into their components. There is no work around.

J-

I learned I could save the file as a jpeg, only the quality is not as good. No I am not the signer. They are test reports from a lab and I don't want to change anything, I just need the reports seperated because all the reports are not sent to one location. One report has one destination and another goes somewhere else. The Lab will charge me more to send each report seperate.

You do understand that a jpeg of a digitally signed file is not a digitally signed file... right?

Yes, it is a copy. That is why I want to extract with signatue(s). Not to create new files but to seperate reports. "sigh"

Got it - you can't - that defies the very definition of a digital signature.

J-