SSH Key Pair Generator: Ed25519, RSA and OpenSSH Format Online

ssh-keygen is the standard tool, but sometimes you need a key in the browser — restricted environments, quick Git deploy keys, or comparing fingerprints without a terminal.

The SSH Key Pair Generator creates:

OpenSSH public key — paste into authorized_keys or GitHub/GitLab
PEM private key — store in ~/.ssh with chmod 600
SHA256 fingerprint — compare with ssh-keygen -lf

Algorithm choice

Algorithm	When to use
Ed25519	Default for new keys — fast and modern
ECDSA P-256	When Ed25519 is unavailable
RSA 4096	Legacy systems requiring RSA

Keys are generated locally with Web Crypto (node-forge fallback). Private material never leaves your device.

SSH Key Pair Generator

SSH Key Pair Generator: Ed25519, RSA and OpenSSH Format Online

Algorithm choice

Tools mentioned in this post