JWT Encoder

JSON Web Tokens (JWT) are industry-standard tokens for securely transmitting information between parties as signed JSON objects. This JWT encoder creates and signs tokens using HMAC algorithms (HS256, HS384, HS512), ensuring data integrity and authenticity. Widely used in authentication systems, API authorization, and secure data exchange. Generate production-ready JWTs with customizable headers, payloads, and expiration times.

Features: Support for HS256, HS384, HS512 HMAC algorithms. Quick expiration presets (1h, 24h, 7d, 30d). Standard JWT claims helpers (iss, sub, aud, exp, nbf, iat, jti). Real-time token generation. Token structure visualization. Copy to clipboard. Perfect for OAuth, SSO, microservices authentication.