OpenSSH Public Key Inspector
Parse an OpenSSH public key — type, fingerprints, comment.
About this tool
Paste one public key or a full authorized_keys file. Each line is parsed with optional options (from=, command=, no-port-forwarding, …). See SHA256 and MD5 fingerprints, detect duplicates, and compare with ssh-keygen or GitHub deploy keys.
What you get
- Single key or full authorized_keys (multi-line)
- Key type, options, SHA256 and MD5 fingerprints
- Duplicate fingerprint detection
- Per-key copy — SHA256 or full line
How to use
Paste a .pub line or entire authorized_keys. Skipped comments and errors are reported per line. Use Copy all SHA256 for bulk comparison with server configs.
FAQ
How to get SHA256 fingerprint of SSH public key?
Paste an OpenSSH public key line and copy the SHA256 fingerprint shown—matches ssh-keygen -lf output format.
How to parse authorized_keys file online?
Paste the full file; each key line is parsed with options, type, fingerprints, and comments on separate rows.
What is the difference between SHA256 and MD5 SSH fingerprints?
SHA256 is the modern default in OpenSSH; MD5 remains for legacy comparisons with older docs and panels.
How to detect duplicate SSH keys?
Paste multiple lines or a full authorized_keys file—duplicate fingerprints are flagged so you can deduplicate access.
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