JWT Decoder
Decode a JWT (JSON Web Token) to view its Header, Payload, and Signature.
This tool is for reference only. The entered token is not sent to any server.
Frequently Asked Questions
Q. What is JWT?
JWT (JSON Web Token) is an open standard (RFC 7519) for securely transmitting information between two parties. It consists of three parts: Header, Payload, and Signature.
Q. What is the exp claim in JWT?
The exp claim represents the token's expiration time, stored as a Unix timestamp (in seconds). Once this time has passed, the token is no longer valid.
Q. Is JWT decoding secure?
The Header and Payload of a JWT are only Base64URL-encoded, not encrypted. Anyone can decode them, so never include sensitive information in the Payload.
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Disclaimer
Results are provided for reference only and may differ from actual values. This tool is for informational purposes and should not be used as a basis for legal, financial, or medical decisions. Please consult a professional if accurate calculations are needed.
Results are provided for reference only and may differ from actual values. This tool is for informational purposes and should not be used as a basis for legal, financial, or medical decisions. Please consult a professional if accurate calculations are needed.