SSH Public Key Inspector
Decode an OpenSSH public key and calculate its standard SHA256 fingerprint.
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How to use SSH Public Key Inspector
Decode an OpenSSH public key and calculate its standard SHA256 fingerprint. The embedded SSH type must match the outer label, every length is checked and trailing bytes are rejected. Key fields are shown as plain text.
- Provide the input and select the documented mode or options.
- Run the tool and review its result and any limits reported below.
- Copy the text result or download a separate output file.
Good to know
- RSA, Ed25519 and ECDSA nistp256 public-key formats only; no private keys, certificates or host trust checks.
- Fingerprinting shows bytes, not mathematical key validity or ownership.20,000 input characters.
- Processing happens in this browser tab. Inputs and results are not automatically saved or uploaded.
Common questions
What does SSH Public Key Inspector process?
The embedded SSH type must match the outer label, every length is checked and trailing bytes are rejected. Key fields are shown as plain text.
What happens to my original input?
The tool creates a separate result. Selected files and pasted data remain on this device; inspect the result before using it in another system.
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