Guides

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：

javakotlin

java

// Remove digital signature.
// You can choose if you want to remove the appearance. 
CPDFDocument document = new CPDFDocument(context);
document.open(FileUtils.getAssetsTempFile(context, "Signed.pdf"));
for (int i = 0; i < document.getSignatureCount(); i++) {
  CPDFSignature signature = document.getPdfSignature(i);
  if (i == 0){
    // Remove first digital signature.
    document.removeSignature(signature, true, (signatureWidget) -> {
				readerView.refreshSignatureWidget(signatureWidget);
    });
  }
}
document.save();

kotlin

// Remove digital signature.
// You can choose if you want to remove the appearance. 
val document = CPDFDocument(context)
document.open(FileUtils.getAssetsTempFile(context, "Signed.pdf"))
for (i in 0 until document.signatureCount) {
  val signature = document.getPdfSignature(i)
  if (i == 0) {
    // Remove first digital signature.
    document.removeSignature(signature, true) { signatureWidget->
				readerView.refreshSignatureWidget(signatureWidget)
    }
  }
}
document.save()

Remove Digital Signatures ​

Remove Digital Signatures