JWT Parser
Decode and inspect JSON Web Tokens (JWT). View the header, payload, and verify the structure of your JWT tokens for debugging and development.
JWT Token
Header
No header
Payload
No payload
About JWT
What is JWT?
JSON Web Token (JWT) is an open standard for securely transmitting information between parties as a JSON object. JWTs are commonly used for authentication and authorization in web applications.
Structure
A JWT consists of three parts separated by dots: header.payload.signature
Parts
Header: Contains metadata about the token (algorithm, type)
Payload: Contains the claims (user data, permissions, etc.)
Signature: Verifies the token hasn't been tampered with
Common Claims
sub - Subject (user ID)iat - Issued Atexp - Expiration Timeiss - Issuer