JWT Decoder
Decode and inspect JSON Web Tokens
About JWT Tokens
JSON Web Token (JWT) is an open standard for securely transmitting information between parties as a JSON object. A JWT consists of three parts: Header, Payload, and Signature, separated by dots.
JWT Structure
- Header: Contains metadata about the token type and signing algorithm
- Payload: Contains the claims (user data, permissions, etc.)
- Signature: Used to verify the token hasn't been tampered with
Note: This tool only decodes the token. It does not verify the signature. Never share your JWT tokens publicly.