SSH Key Generator (Ed25519, ECDSA, RSA)
Create SSH key pairs locally in OpenSSH format with SHA256 fingerprints — or inspect and convert keys you already have.
Help shape SSH Key Generator (Ed25519, ECDSA, RSA)
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Frequently Asked Questions
Keys are generated with the browser's built-in WebCrypto and never leave the tab. For high-value servers, ssh-keygen on the machine itself is still the gold standard.
Ed25519: short, fast and secure. Use RSA 3072+ only for old servers that don't support Ed25519.
No — the downloaded OpenSSH key is unencrypted. Add a passphrase with ssh-keygen -p -f id_ed25519 after saving it.
Paste the .pub line into the Decode tab. It shows the SHA256 fingerprint exactly as ssh-keygen -l prints it.