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    JWT Decoder — View Token Contents

    Decode the header and payload sections of a JWT token and view them as readable JSON.

    Runs in your browser, no data sent Free · No sign-up required
    Token expired · Expires: 14.11.2023 23:13:20 · Issued: 14.11.2023 22:13:20
    {
  "alg": "HS256",
  "typ": "JWT"
}
    {
  "sub": "1234",
  "name": "Clou.TR",
  "iat": 1700000000,
  "exp": 1700003600
}

    Inspect JWT contents safely

    When debugging authentication issues, you want to see what information (user ID, roles, expiry) a JWT carries. This tool decodes the token and displays the header and payload sections as readable JSON, and also evaluates the expiry (exp) information.

    Note: Decoding does not verify the signature; this is only for reading the content. The process happens entirely in your browser.

    Frequently Asked Questions

    A JWT (JSON Web Token) is a token format consisting of three dot-separated parts (header, payload, signature) used to securely transmit information between two parties. It is commonly used for session and authentication purposes.

    No. This tool only makes the token's content (header and payload) readable; it does not verify the validity of the signature. Signature verification requires a secret key and must be done on the server side.

    This tool runs entirely in your browser; your token is never sent to any server. Still, as a general security recommendation, you should avoid pasting live, valid production tokens into any online tool.

    exp (expiration) specifies the time at which the token expires, as a Unix timestamp. This tool converts the exp and iat (issued-at) fields into a readable date and shows whether the token has expired.

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