JWT Decoder
Decode JSON Web Tokens and view their header, payload, expiration dates and signature directly in your browser. Nothing is sent to any server.
Header
Payload
Signature
Token Information
FAQ
What is a JWT?
A JSON Web Token is a compact token format commonly used for authentication and securely transferring data between applications.
What parts does a JWT contain?
A JWT contains three parts separated by dots: a header, a payload, and a signature.
Does this tool verify the JWT signature?
No. This tool only decodes the token. It does not verify whether the signature is valid or whether the token is trustworthy.
What do exp and iat mean?
The exp claim contains the token expiration date. The iat claim shows when the token was issued. Both values are usually Unix timestamps.
Is my JWT token uploaded?
No. The token is decoded locally in your browser. Nothing is uploaded or stored.