Credscopeor
Access certificate inspector
Parse an X.509 certificate, check it against the access certificate profile of ETSI TS 119 411-8, and verify it with the certificate of its CA. ETSI TS 119 411-8, PEM, base64 or DER
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.