Toolora

JWT Decoder

Decode JWT header, payload and expiration.

The JWT Decoder reads the header, payload and expiration of a JSON Web Token. It is a quick way to inspect tokens during development and debugging without writing code.

How to use

  1. Paste a JWT into the input field.
  2. The decoded header and payload are shown as JSON.
  3. Check the expiration and claims in the output.

Frequently asked questions

Is the token sent to a server?

No, decoding happens locally in the browser.

Does this tool verify the signature?

It decodes the payload but does not verify cryptographic signatures.