Verify PDF Digital Signatures

Open a signed PDF and check integrity, signer identity, and Paprkit certificate trust.

How to verify a PDF signature

  1. Open Verify: Open Verify signature or the Verify tab in Sign PDF.
  2. Drop the signed PDF: Choose the PDF you received or exported after signing.
  3. Run verification: Review whether each signature is intact and who signed the document.

Why this tool

  • Local verification: Signature checks run in your browser. The PDF is not sent to a third party for verification.
  • Paprkit and custom certificates: See Paprkit-signed documents and certificates from your own PKCS#12 identity.

Frequently asked questions

Does this prove a signature is legally valid?

Verification confirms cryptographic integrity and shows signer certificate details. Legal weight depends on your jurisdiction and how the document was signed.

Can I verify after signing in Paprkit?

Yes. After signing, use Verify on the same tool or open Verify signature from the tools catalog.