JWT Decoder
Decode the header and payload of a JSON Web Token in this browser. This page only decodes the token. It does not verify the signature, check exp, or contact the issuer.
Decode only. This page only decodes the token. It does not verify the signature.
Example: Unverified sample
eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c3JfMTg0MiIsIm5hbWUiOiJBZGEgTG92ZWxhY2UiLCJpYXQiOjE3MTAwMDAwMDB9.example-signature-not-verifiedA common error
A token needs three segments, and the first two must be Base64URL JSON. Two segments fail to decode. A successful decode still does not mean the signature is valid.
The editor runs in the browser after this page loads. Nothing you paste is uploaded unless you save a Pro project.