JWT Decoder
Decode JSON Web Tokens instantly. View header, payload, and signature with expiration status.
About JWT
A JSON Web Token (JWT) is a compact, URL-safe token format used for authentication and information exchange. It consists of three Base64URL-encoded parts separated by dots: a header, a payload, and a signature.
How to Use
- Paste a JWT token to instantly decode its header and payload.
- Standard claims like expiration, issuer, and subject are displayed with labels.
- Expiration status is shown in real time with time remaining or elapsed.
- Everything runs in your browser — no data is sent to any server.