# Validate your JWT

Before you register your application, check if your JWT is valid.

You can validate your JWT at [jwt.io](https://jwt.io):

1. Paste the contents of your JWT into the **Encoded Token** field.
2. In the **JWT Signature Verification** section, paste the full contents of your public key or certificate file into the **Public Key** field.
3. Check that the JWT is decoded correctly and the signature matches your public key.

:::note
This only checks if the JWT is well-formed, if the header and payload have been correctly signed, and if the signature matches the provided certificate.
:::