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Vonnie_Feng
Participant
August 9, 2019
Question

Adding Watermark to Signed PDFs

  • August 9, 2019
  • 2 replies
  • 4958 views

I have an extensive number of digitally signed PDFs. My organization want to add a watermark to those files without altering the content or removing the signatures. We also prefer to leave the original text in the PDF searchable.  How can I do that?

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2 replies

T
Test Screen Name
Legend
August 10, 2019

And... if you found software that ignored the lock, it would break the signature. This is how signatures are designed, so a file can't be edited after signing. For you, watermarks are innocuous but the PDF rules don't make allowance for it.

try67
Community Expert
try67Community Expert
Community Expert
August 9, 2019

You can't. A digital signature locks the file from further changes.

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