Is the generated SSH key secure?

Yes. Keys are generated locally using your browser's Web Crypto API. The key pair never leaves your device — nothing is transmitted over the network.

RSA vs ECDSA: which should I choose?

RSA is the traditional choice, with 2048-bit being secure enough and 4096-bit providing extra security. ECDSA (Elliptic Curve) offers equivalent security with smaller keys and faster signing. GitHub/GitLab recommend ECDSA for new keys.

How do I use the generated keys?

Save the private key as ~/.ssh/id_rsa (Linux/Mac) or %USERPROFILE%/.ssh/ (Windows). Paste the public key into GitHub/GitLab SSH settings or server authorized_keys. Keep your private key safe!

Free Online SSH Key Generator - RSA/ECDSA Key Pairs

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Updated: 2026-07-12

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SSH Key Pair Generator

Free online SSH key generator using Web Crypto API. Generate RSA or ECDSA key pairs locally in your browser. Keys never leave your device.

Key Type: Comment:

🔓 Public Key

Click Generate to create a key pair...

🔐 Private Key — Keep it secret!

Click Generate to create a key pair...

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📖 How to Use

1. Select key type: RSA-2048 recommended for compatibility, ECDSA for performance.

2. Set comment: Helps identify the key, e.g. yourname@github or server@prod.

3. Generate & save: Download the private key to ~/.ssh/, paste public key to GitHub etc.

⚠️ Never share your private key!

❓ FAQ

Are the generated keys secure?

Yes. Keys are generated locally using Web Crypto API. Nothing leaves your device.

RSA vs ECDSA?

RSA is traditional, ECDSA offers smaller keys and faster signing. GitHub recommends ECDSA for new keys.

How to use the keys?

Save private key to ~/.ssh/id_rsa. Paste public key to GitHub/GitLab SSH settings. Keep private key safe.

Compatible with ssh-keygen?

Yes, the key format is fully compatible with OpenSSH's ssh-keygen tool.