JWT Decoder
Decode and inspect JSON Web Tokens. View Header, Payload, and check expiration.
About JWT
A JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. It consists of three parts: a Header (algorithm and token type), a Payload (claims such as user ID, roles, and expiration), and a Signature (used to verify the token). All decoding happens locally in your browser — no data is sent to any server.