Digital Signatures

IronPDF has options to digitally sign new or existing PDF files using .pfx and .p12 X509Certificate2 digital certificates.

Once a PDF is signed, it can not be modified without the certificate being invalidated. This ensures fidelity.

To generate a signing certificate for free using Adobe Reader, please read

In addition to cryptographic signing, a hand written signature image or company stamp image may also be used to sign using IronPDF.

You can download a file project from this link.