Generate secure SSH key pairs (Ed25519, RSA) for server authentication and Git. Creates public/private keys with fingerprints
Generate SSH key pairs in your browser, RSA, ECDSA, or Ed25519. Download the public and private keys and get setup instructions for common platforms like GitHub, GitLab, and standard SSH servers.
Initializing in your browser…
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You are onboarding to a new Git host and need a modern SSH keypair to paste a public key into your account settings.
Options
Type Ed25519 · Comment "you@laptop"
Keypair
Public key (add this to the Git host): ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM… you@laptop Private key (save to ~/.ssh/id_ed25519, never share): -----BEGIN OPENSSH PRIVATE KEY----- …
Ed25519 is the recommended default: small keys, fast, and strong, preferable to RSA-2048 for new keys. Only the public half goes to the server; the private half is what proves your identity and must stay on your device. Generation runs entirely in the browser, so the secret key is never transmitted.
Generate SSH key pairs in your browser, RSA, ECDSA, or Ed25519. Download the public and private keys and get setup instructions for common platforms like GitHub, GitLab, and standard SSH servers.
Generate a key pair and add the public key to your Git hosting account for passwordless push and pull.
Create keys for SSH access to remote servers without relying on password authentication.
Generate dedicated key pairs for automated deployment pipelines that need SSH access to repositories or servers.
Quickly generate a new key pair when an existing key needs to be rotated or has been compromised.
SSH keys provide passwordless, cryptographically strong authentication. This generator supports the three major key types: RSA (widely compatible, use 4096 bits), ECDSA (smaller keys, good performance), and Ed25519 (modern, fast, recommended for new setups). The private key is generated client-side and never transmitted.
Ed25519 for most use cases, it's fast, secure, and produces small keys. Use RSA 4096 if you need compatibility with very old systems.
Yes, when using the Web Crypto API. The private key is generated locally and never leaves your device.
For personal keys, yes, a passphrase protects the key if someone gains access to your machine. For automated CI/CD keys, passphrases are usually omitted.
This runs as client-side JavaScript. Keys, tokens, payloads, and other inputs never leave your device.