JWT (JSON Web Token) Parser

Decode and inspect JSON Web Tokens. Paste a JWT into the field below to see its decoded header and payload.

Enter JWT

About JWT (JSON Web Token)

JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties. A JWT consists of three parts separated by dots (`.`): Header, Payload, and Signature.

Header: Typically consists of two parts: the token type (JWT) and the signing algorithm being used (e.g., HMAC SHA256 or RSA).
Payload: Contains the claims. Claims are statements about an entity (typically, the user) and additional data. There are three types of claims: registered, public, and private claims.
Signature: Used to verify that the sender of the JWT is who it says it is and to ensure that the message wasn't changed along the way.

This tool decodes the Base64Url encoded header and payload to show their JSON content. The signature part is displayed as is.Always verify the signature of a JWT in a secure backend environment before trusting its content.