Compute cryptographic SHA-256 and MD5 fingerprints for OpenSSH public keys in-browser.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Paste your OpenSSH public key (e.g. ssh-ed25519 AAAAC3...).
Inspect the computed SHA256:Base64 key digest, algorithm, and comment.
Copy the fingerprint to verify against GitHub, GitLab, or AWS EC2 key pairs.
Never. Only paste your PUBLIC key (.pub). Never paste private SSH keys into any web tool.
ED25519, RSA, ECDSA, and DSA OpenSSH formatted public keys are supported.
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