JWT Decoder & Expiry Checker
Decode JWT header and payload, inspect all claims, and check token expiry with clear warnings for expired or soon-to-expire tokens. Free by Graph Tools.
Use this free JWT decoder to inspect any JSON Web Token without needing the signing key. Paste a JWT to instantly see the decoded header (algorithm, token type) and payload (all claims, expiry, issuer). The tool checks whether the token is expired and flags the remaining lifetime for valid tokens. Useful for debugging authentication flows and verifying token structure in development.