Digitally sign PDF with P12 or PFX certificate
Sign a PDF with a digital certificate—not a visual signature.
Your files stay on your device and are never sent to a server.Privacy
Sign with your digital certificate
The cryptographic signature is created directly in your browser.
This is not the Sign PDF tool. A certificate and its private key create the cryptographic signature; no drawn signature is added.
4. Check certificate
Digitally signed PDF
Trust depends on the certificate, issuing chain, validity, and the reader’s trust store.
PDF, certificate, password, and private key stay on this device and are not stored.