Check certificate validity, issuer, expiry and chain for any domain. Free, instant, no sign-up.
SSL and its successor TLS are cryptographic protocols that encrypt traffic between a browser and a server. A valid certificate lets a site use HTTPS, proves identity, and keeps data private in transit.
Whether the SSL certificate is valid, expired, or invalid.
When the certificate expires and how many days remain.
The Certificate Authority that issued the certificate.
The domain or organization the certificate is issued to.
The path from the root CA to the end-entity certificate.
Serial number, fingerprint, and other certificate metadata.
Quick answers about this free tool — no signup required.
SSL/TLS certificates encrypt traffic between browsers and servers and enable HTTPS. A valid certificate proves identity and keeps data private in transit.
Free migration includes DNS, SSL and email records, checked before you switch.
