JWT Decoder
Paste a JSON Web Token to inspect its header and claims, with registered claims
like exp and iat translated to real dates and an expiry
check at a glance. Optionally verify an HS256 signature with a shared secret.
Header
Payload
Registered claims
| Claim | Raw | Meaning |
|---|
Verify signature (HS256 / HS384 / HS512)
Private by design: decoding and verification happen entirely in your browser with the Web Crypto API. Tokens and secrets are never uploaded, logged, or stored.