Are my Auth0 tokens sent anywhere?

No, all decoding happens locally in your browser ensuring your Auth0 credentials remain secure.

Can I verify the signature?

Decoding and signature verification are different steps. You can see the claims without the private key.

JWT token

Optional public key (PEM)

Example

token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjoiZGVtbyIsImlhdCI6MTcwMDAwMDAwMH0.signature

Run the tool to generate output.

The Auth0 JWT Decoder allows you to inspect authentication tokens and specific claims from Auth0.

Open Auth0 JWT Decoder and enter the source input you want to work with.
Run the tool once with a small sample so you can confirm the result format.
Copy, download, or reuse the output in your target app after a quick verification pass.

Inspect Auth0 session token claims and expiration.

Verify your Auth0 integration payload structure.

Debug authorization issues locally during Auth0 development.