Open PPK files in your browser
The key PuTTY and WinSCP log in with, and OpenSSH's id_ed25519 and its kin. See which key a file is and its fingerprint, right here. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your key file opens as what it holds: each key by its kind and size, and the certificates beside it.
- Each key's kind and size • Never the key itself
- Locked files • The password stays on your device
- Who it signs as • Its certificates and their chain
- SSH and PuTTY keys • With their fingerprints
About PPK
Simon Tatham's PuTTY, the SSH client for Windows, keeps its keys in a .ppk of its own, which PuTTYgen makes and converts. Version 3 locks a key with Argon2, and version 2 with SHA-1. OpenSSH keeps keys as id_rsa, id_ecdsa and id_ed25519, a .pub beside each, and lists keys in authorized_keys and known_hosts.
A PPK keeps its public half in plain text with a comment, so its kind, size and fingerprint read without the passphrase, while the private half stays locked.
Filepeek shows each key's kind, size, comment and fingerprints as SSH prints them, the options in authorized_keys and the hosts in known_hosts. A private key shows only its kind and size, never the key itself.
PuTTY private key
.ppk
Format
- MIME type
- application/octet-stream
- Made by
- Simon Tatham
Inside the file
- Holds
- One SSH key
- Public half
- Plain text, with a comment
- Private half
- Locked with a passphrase, or not
- Made by
- PuTTYgen
Opens in every browser
Browsers download PPK files. Filepeek shows which key one holds in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I see a PPK's fingerprint?
Drop it on this page or press Peek a PPK. Its fingerprint shows as SHA256 the way ssh-keygen prints it, and as MD5, with no passphrase needed.
Can I open id_rsa, id_ed25519 or authorized_keys?
Yes. OpenSSH's private and public keys, authorized_keys and known_hosts open by their names, with each key's kind, size, comment and fingerprint.
Does Filepeek show or convert my private key?
No. It shows only the key's kind and size, and the file never leaves your device.
Is my file uploaded?
No. The file opens inside your browser and never leaves your device.