JWT Decoder & Verifier
Paste a JSON Web Token to decode and inspect its header, payload, signature and key claims (iss, exp, iat, aud, sub). Verify HMAC signatures locally — your token and secret never leave the browser.
Paste a token to decode it.
Paste a JSON Web Token to decode and inspect its header, payload, signature and key claims (iss, exp, iat, aud, sub). Verify HMAC signatures locally — your token and secret never leave the browser.