paper🔒 Runs on your device
Digital signature (PAdES)
Add a real certificate signature that PDF readers verify: they show who signed and flag any later change. Use your .p12/.pfx or create a personal certificate.
Open Paper to digital signature (PAdES) →Your file never leaves your device: Paper does this in your browser, and its security policy stops the page from sending data to any other site.
How to digital signature (PAdES)
- Open the PDF and finish your edits.
- Click More, then Digital signature.
- Load your certificate or create one, then sign and download.
Questions
Is it free?
Yes, free and open source, with no sign-up and no watermark.
Is this the same as drawing my signature?
No. A digital signature is cryptographic proof of who signed and that nothing changed; you can add a drawn signature too.
Is my certificate uploaded?
No. Signing happens in your browser; the certificate never leaves your device.