Decode and inspect JSON Web Tokens instantly.
A JSON Web Token (JWT) is a compact, URL-safe token used for authentication and information exchange. It consists of three parts separated by dots: a Header (algorithm and token type), a Payload (claims/data), and a Signature. This tool decodes and displays the Header and Payload in readable JSON format. Note that this tool does not verify the signature — never trust a JWT without proper server-side verification.