Skip to main content
Skip table of contents

Can a PDF document be modified once it has been signed?

Yes, you can modify a signed PDF document, however the electronic certificate will be invalidated by doing so.

This is what makes digital signatures so secure in the first place - you always be sure that the signed document has not been tampered with after a signature was inserted.

JavaScript errors detected

Please note, these errors can depend on your browser setup.

If this problem persists, please contact our support.