Verify PDF Signature
Cloud Processing (Encrypted)Upload a signed PDF and verify its digital signature in seconds — certificate validity, document integrity, and signer identity. Free, no signup, files deleted after processing.
How this tool works (no sign-up needed)
- Upload your file above. Each tool shows whether it runs Local (in your browser) or Cloud (encrypted servers).
- Adjust options, then click the Run / Convert / Process button.
- Wait for progress, then download the result. Use Next tools to continue.
If buttons are not visible, enable JavaScript — the interactive workspace loads in your browser.
Server-side verificationDigital signatures validated server-side by pdfcpu (Apache-2.0)
Supports application/pdf
What is it?Verify PDF Signature is a PDFLean security & privacy tool: check a PDF's digital signature — certificate validity, document integrity, and signer identity — with a clear report.
TL;DR: Upload a signed PDF and verify its digital signature in seconds — certificate validity, document integrity, and signer identity. Free, no signup, files deleted after processing.
About this tool
Verify PDF digital signatures online: certificate validity, document integrity, and signer identity — checked server-side with pdfcpu. Free, no signup; files auto-deleted within 24 hours and never used for AI training.
How to use
Upload a digitally signed PDF
Click Verify signature
Review certificate validity, document integrity, and signer identity
FAQ
What does verification check?
That the document hasn't changed since signing, and that the signer's certificate was valid at signing time.
Is this legally binding proof?
It's a technical verification, not legal advice. For disputes, consult a qualified trust service provider.
Is my file safe?
Files are transferred over an encrypted channel and auto-deleted within 24 hours, never used for AI training.