JWT Decoder - Decode free JSON Web Tokens online
Easily decode JWTs and view payload content with our free online JWT Decoder. Perfect for developers, programmers and security specialists who want to analyze tokens.
Easily decode JWTs and view payload content with our free online JWT Decoder. Perfect for developers, programmers and security specialists who want to analyze tokens.
A JSON Web Token (JWT) is a compact, URL-secure way to represent claims between two parties. It is often used in authentication systems: after a user logs in, the server returns a JWT. The user then sends this token along with each subsequent request to prove who they are.
A JWT consists of three parts, separated by periods (`.`):
- Header: Contains the type of token and the encryption algorithm used.
- Payload: Contains the "claims," such as the user ID, roles, and an expiration date.
- Signature: Used by the server to verify that the token has not been manipulated. This tool does not verify the signature; it only decrypts the public parts.