Tools
JWT Decoder
Decode and inspect JWT tokens. View header and payload claims in a readable JSON tree. All client-side.
HEADER
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9
PAYLOAD
eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE3MTYyMzkwMjJ9
SIGNATURE
abc123def456...
{
"alg": "HS256",
"typ": "JWT"
}{
"sub": "1234567890",
"name": "John Doe",
"iat": 1516239022,
"exp": 1716239022
}Algorithm
HS256
Token Type
JWT
Issued At
2018-01-18T01:30:22.000Z
Expires At
2024-05-20T21:03:42.000Z
Subject
1234567890
Issuer
N/A
Audience
N/A
JWT ID
N/A
How to use this tool
Inspect the header and claims of a JSON Web Token during integration debugging. Decoding makes a token readable but does not prove it is trusted.
Suggested workflow
- Paste a token you are authorized to inspect.
- Read the decoded header and payload.
- Verify issuer, audience, expiry, and signature in your application.
Good to know
A decoded JWT is not verified. Never make authorization decisions from decoding alone.
JWT Decoder - CodeTools Toolbox - 47 free online developer tools.