JWT Decoder
Decode and inspect JWT tokens. View header, payload, and expiration.
About JWT Decoder
Decode and inspect JSON Web Tokens (JWT) without sending them to any server. View the header (algorithm, type), payload (claims, expiration), and signature. Timestamps are automatically converted to readable dates with expiration status.
Frequently Asked Questions
Is it safe to paste my JWT here?
Yes, the JWT is decoded entirely in your browser. It is never sent to any server or stored anywhere.
Can this tool verify JWT signatures?
This tool decodes and displays JWTs but does not verify signatures, as that requires the signing secret or public key.