UniToolHub

JWT Decoder

Decode and inspect JSON Web Tokens securely.

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About JWT Decoder

Decode JSON Web Tokens (JWT) easily and securely. View the header and payload of your JWT without sending data to our servers.

How to Use

  1. 1

    Paste JWT

    Paste your full JSON Web Token string.

  2. 2

    Inspect Payload

    The tool separates and decodes the Header and Payload for easy reading.

Examples

Standard JWT
Input: eyJhbGciOiJIUz... (Header.Payload.Signature)
Output: Decoded JSON Payload

Frequently Asked Questions

Is my token secure?
Yes, the decoding happens entirely in your browser using JavaScript. We do not transmit or log your JWT.
Can I verify the signature?
Currently, this tool only decodes the header and payload. It does not verify the cryptographic signature.