Seal your documents
with cryptographic proof.
Upload any document and receive a digitally signed certificate that proves its authenticity and exact content at a specific moment in time. Anyone can verify it — no account required.
Start for Free Verify a DocumentBuilt on cryptographic trust
Every notarization creates a mathematically verifiable proof that your document existed, unchanged, at a specific point in time.
RSA-4096 Cryptography
Each document is hashed with SHA-256 and signed with a 4096-bit RSA key, producing a tamper-evident seal. Any change to the file — even a single byte — invalidates the signature.
Instant QR Verification
Every certificate includes a QR code that links to a public verification page. Third parties can confirm authenticity in seconds — no account needed.
Complete Notarized Package
Download a single PDF containing your original document, the certificate of notarization, and the digital signature printed in the footer of every page.
How it works
Three steps from upload to verified certificate.
Upload Your Document
Submit any PDF, image, or Word file up to 10 MB. Multiple files can be notarized at once.
Cryptographic Sealing
A SHA-256 fingerprint of your file is computed and signed with an RSA-4096 private key, creating a unique, unforgeable seal tied to this exact version of the document.
Download & Share
Receive a complete notarized PDF — original pages plus certificate — with a QR code anyone can scan to independently verify authenticity.
Supported file types
Your documents deserve proof.
Create a free account and notarize your first document in under a minute.
Create Free Account