securityClient-Side Secure
Validate PDF Signature
Verify the authenticity of digital signatures in your PDF documents. Ensure document integrity and trustworthiness with our signature validation tool.
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How to use
- Upload a digitally signed PDF.
- Validate the signature(s) in your browser.
- Review whether the signature is intact and the document is unchanged.
- Use the result to confirm authenticity.
Common use cases
- Confirming a signed contract hasn’t been altered after signing.
- Verifying the authenticity of an official signed document.
- Checking signature integrity before relying on a file.
Frequently asked questions
- Is my document uploaded?
- No — signature validation runs in your browser.
- What does validation check?
- Whether the signature is intact and the content is unmodified since it was signed.
- Does a valid signature guarantee the signer’s identity?
- It confirms integrity and the certificate used; trust in the signer also depends on the issuing authority.