JWT Decoder
Decode JSON Web Tokens to view header, payload, and signature instantly.
JWT Decoder
About JWT Decoder
Decode JWT tokens to view their header, payload, and signature. This tool only decodes tokens and does not verify signatures.
Understanding JWTs
JWT (JSON Web Token) is a compact, URL-safe means of representing claims to be transferred between two parties. JWTs are commonly used for authentication and authorization in web applications.
JWT Structure
A JWT consists of three parts separated by dots: Header.Payload.Signature.
- Header: Contains token type and hashing algorithm
- Payload: Contains the claims (data)
- Signature: Verifies the token hasn't been tampered with