JWT Decoder · runs in your browser

JWT Decoder: read a token safely

Decode a JSON Web Token in your browser, check expiry and algorithm, and see which claims anyone holding the token can read.

Decoding happens in your browser. The signature is not verified here: anyone can read a JWT, only the server with the key can check it. Never paste live production tokens into websites you do not trust, including this one.

Header

Payload

Claims and checks

    Read the background