or
Parse a Token Status List JWT, check its header and claims, count its statuses and look up the status at an index. draft-ietf-oauth-status-list, JWT
Everything stays in your browser. All parsing and checks run on this page, and nothing you paste, drop or check is sent to a server. The page only makes a request when you fetch a URL or check a signer against the EU List of Trusted Lists, and your browser sends it straight to that URL. A link to a result holds the input after the #, which browsers do not send to a server.