When to generate JWTs locally
A JWT generator is useful for local development, integration tests, and learning how claims and algorithms interact. Cyberway signs tokens in the browser so sample secrets and keys stay on your machine. Prefer short-lived tokens and never reuse demo secrets in production.
Algorithms supported
The generator supports HS256, HS384, HS512, RS256, and ES256. HMAC algorithms need a shared secret; RSA and ECDSA need a PEM PKCS8 private key. The tool does not offer alg: none — unsigned tokens are a common security footgun.
Decode what you create
After you generate a token, open it in the JWT Decoder to inspect claims, expiry, and signature verification. Pair both tools with the Complete JWT Guide and common JWT security mistakes.