📜 VaultPDF exclusive · Runs in your browser

Prove your document never touched a server.

Generate a signed-style certificate documenting that your file was processed locally, complete with a SHA-256 fingerprint an auditor can independently verify. Useful for client files, compliance records, and internal audit trails.

Drop your PDF here, or click to browse
Nothing is uploaded — your file stays on this device
PDF
document.pdf
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SHA-256 fingerprint
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Select the VaultPDF operation this document went through. The certificate records it as a statement of fact about your workflow.
Appears on the certificate. Leave blank for an unattributed certificate.
Computing fingerprint…
No file upload, ever Real SHA-256 fingerprint Free, no sign-up

Good to know

What exactly does this certificate prove?

Two things. First, it records the SHA-256 fingerprint of your document — a value that changes completely if even one byte of the file is altered, so anyone can confirm the file they hold is the one the certificate covers. Second, it documents that the processing happened in your browser, which is a property of how VaultPDF is built rather than a promise you have to take on trust.

Is this a legally binding document?

It is a technical record, not a legal instrument. It carries no digital signature from a certificate authority and is not notarised. It is designed to support an audit trail or internal compliance file, alongside your own records — not to replace legal advice or a formal attestation. VaultPDF is not a law firm.

Can someone verify the fingerprint independently?

Yes, and that is the point. Any SHA-256 tool — a command line, an online checker, or another application — computing the hash of the same file will produce the identical value shown on the certificate. No VaultPDF involvement is needed to verify it.

Does the certificate contain my document's contents?

No. It contains the filename, size, timestamp, the operation you selected, and the fingerprint. The content of the document itself is never read into the certificate, and nothing is transmitted anywhere.