JWT Decoder

Decode JWT (JSON Web Token) to view header, payload, and signature. Supports expiration time and claim validation.

JWT Input

Enter the JWT to decode.

JWT format: header.payload.signature

What is JWT (JSON Web Token)?

JWT is a compact, self-contained way to securely transmit information between parties as a JSON object. Decoded information is only viewed on the client and never sent to any server.

Structure:

Header: Token type and signing algorithm
Payload: Claims (data)
Signature: Signature (for verification)