JWT Decoder & Debugger
Decode and inspect JWT tokens online. View header, payload and verify JWT signatures.
What is JWT?
JSON Web Token (JWT) is a compact, URL-safe token format used for securely transmitting information between parties. JWTs consist of three parts: a header (algorithm and type), a payload (claims), and a signature. Our JWT Debugger decodes tokens instantly in your browser, letting you inspect headers and payloads without sending your token to any server.