JWT Decoder

Paste a JSON Web Token (JWT) into the box below to instantly decode it and view the contents of the header and payload. All decoding is done securely in your browser.

Encoded Token

Note: This tool only decodes the token. The signature is not verified against the secret key.

Header: alg & typ

{...}

Payload: Data

{...}

Signature: HMACSHA256(...)

...