JWT Decoder
Decode JWT tokens and inspect the header, payload, and signature without any verification.
Runs entirely in your browser — nothing is uploaded or stored on any server.
About JWT Decoder
Updated Jan 2025The JWT Decoder splits a JSON Web Token into its three parts — header, payload, and signature — and displays each as formatted JSON. This lets you quickly inspect token claims, expiration times, issuer information, and algorithm settings without needing a secret key. Signature verification is not performed.