KeyGen

Generate RSA or ECDSA keypairs for development — exported as PEM.

Generated locally with WebCrypto — private keys are never transmitted anywhere

For development and testing only. Use these for local dev certs, test JWTs (see JWTStudio), or learning — not for production TLS certificates or anything securing real user data. Any browser-generated key has touched a machine you don't control the full security posture of.

Private key (PKCS#8)

Public key (SPKI)