JSON Web Token, a compact URL - safe format for securely transmitting claims between parties. It consists of a header, payload, and signature.

The header and payload are Base64-decoded and displayed as formatted JSON. The signature is shown separately.

This debugger decodes and displays the token structure. For signature verification, you would need the secret key or public key.

नहीं, JWT debugging runs entirely in your browser. Your token is parsed and decoded locally with JavaScript and never transmitted anywhere.