JWT Decoder

Decode a JWT's header and payload (no verification).

curl "https://encode.wrapper-agency.com/api/v1/encode?op=jwt-decode&value=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c"

Note: this JWT decoder is a client-side inspection utility. It reads the header and payload but does notverify the signature. Always verify JWTs server-side with the issuer's key before trusting any claim.

About JWT Decode

A JSON Web Token (JWT) has three Base64url parts separated by dots: header, payload, and signature. This tool decodes the header and payload into readable JSON.

Decoding is purely a client-side inspection utility: it does NOT verify the signature and does not prove the token is authentic or untampered. Always verify signatures server-side with the issuer's key before trusting any claim.

Use it to quickly read claims like sub, iat, exp, and custom fields while debugging authentication flows.

Example

Use it from code

curl "https://encode.wrapper-agency.com/api/v1/encode?op=jwt-decode&value=YOUR_TEXT"

Free during beta — no key. See the full API reference.