JWT Encoder
Create and encode JSON Web Tokens (JWT) with custom header, payload, and secret
Security Notice
This is a demo tool for learning purposes. Never use weak secrets or expose sensitive information in production JWTs.
Header
Common algorithms: HS256, HS384, HS512, RS256, ES256
Payload
Standard claims: sub, iss, aud, exp, nbf, iat, jti
Secret Key
For HS256, use a secret of at least 256 bits (32 characters)
About JWT Encoding
Process: The JWT is created by base64url-encoding the header and payload, then signing the combination with your secret key.
Algorithm: This tool uses HMAC-SHA256 (HS256) for signing. The algorithm specified in the header must match the implementation.
Security: The secret key should be kept secure and be sufficiently long (256+ bits for HS256).
Standard Claims:
iss- Issuersub- Subjectaud- Audienceexp- Expiration Timenbf- Not Beforeiat- Issued Atjti- JWT ID
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