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Remove Digital Signatures
You can easily remove a digital signature, and when you do so, both the appearance and data associated with the signature will be deleted.
It's important to note that removing a signature does not remove the signature field.
This example shows how to remove digital signatures:
C#
// Remove digital signature.
// You can choose if you want to remove the appearance.
CPDFSignature signature = document.GetSignatureList()[0];
document.RemoveSignature(signature, true);
string filePath = outputPath + "\\" + document.FileName + "_RemovedSign.pdf";
document.WriteToFilePath(filePath);