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JWT Decoder

Decode a JWT header and payload. This does not verify its signature.

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A useful toolkit for text, data, images and calculations.

  1. 01

    Add your input

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  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

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JSON Web Token decoder online

Inspect the readable claims in a three-part JWT. Decoding does not verify its signature, issuer, expiry policy or authorization value.

How to use it

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Worked examples

Inspect the readable claims in a three-part JWT.

Worked example — JWT Decoder

Settings: No additional options

Input:

eyJhbGciOiJub25lIn0.eyJzdWIiOiJleGFtcGxlIn0.

Output:

{
  "header": {
    "alg": "none"
  },
  "payload": {
    "sub": "example"
  },
  "signatureVerified": false
}

For this input, “signatureVerified” is false. These are the named fields in the example output.

Choose the right tool

Reading the payload does not establish who issued a token or whether it is valid. Verify the signature, issuer, audience and expiry in the application that accepts the token.

Limitations and common mistakes

  • Decoding does not verify its signature, issuer, expiry policy or authorization value.

Frequently asked questions

How can I decode a JWT token online?

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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