JWT Debugger & Verifier
Decode, inspect claims, and verify JSON Web Tokens (JWT) 100% locally with zero server transmission.
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331 chars
Header (Red) • Payload (Purple) • Signature (Cyan)
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiZW1haWwiOiJqb2huLmRvZUBleGFtcGxlLmNvbSIsInJvbGUiOiJkZXZlbG9wZXIiLCJpYXQiOjE3ODkwNjYxMTUsImV4cCI6MTc4OTE1NjExNSwiaXNzIjoiaHR0cHM6Ly9hdXRoLmV4YW1wbGUuY29tIiwiYXVkIjoiaHR0cHM6Ly9hcGkuZXhhbXBsZS5jb20ifQ.EWt3wwt5qCbiR1pVP-95Pjrwy4gvVH8Q6ZAirS5Gr1w
Header: Algorithm & Token Type
HS256
{
"alg": "HS256",
"typ": "JWT"
}Payload: Data & Claims
Standard Claims Inspection
exp Expired
Fri, 11 Sep 2026 19:48:35 GMT
4 days ago
iat
Thu, 10 Sep 2026 18:48:35 GMT
5 days ago
iss
https://auth.example.com
sub
1234567890
aud
https://api.example.com
{
"sub": "1234567890",
"name": "John Doe",
"email": "john.doe@example.com",
"role": "developer",
"iat": 1789066115,
"exp": 1789156115,
"iss": "https://auth.example.com",
"aud": "https://api.example.com"
}Signature Verification
Enter secret key to verify signature