SSH Key Fingerprint
SHA-256 fingerprint of an SSH key.
Runs entirely in your browser — nothing you enter is uploaded, logged, or tracked.
Paste an SSH public key (the one-line ssh-rsa / ssh-ed25519 / ecdsa format) to compute its fingerprint exactly as ssh-keygen -lf would — the SHA-256 base64 fingerprint and the legacy MD5 hex — along with the key type and bit length. A quick way to confirm a key matches what you expect before adding it to authorized_keys.
Frequently asked questions
What key formats work?
The standard one-line OpenSSH public key format — ssh-rsa, ssh-ed25519, ecdsa-sha2-* and ssh-dss — with or without the trailing comment.
Does the fingerprint match ssh-keygen?
Yes — the SHA-256 fingerprint (SHA256:… base64, no padding) and the MD5 fingerprint (colon-separated hex) match what ssh-keygen -l reports.
Is my key uploaded?
No — it is a public key, and the fingerprint is computed entirely in your browser anyway.