What does an SSL scanner check?

An SSL scanner connects to the server over HTTPS and reports the certificate's subject, issuer, validity period (notBefore, notAfter), and subject alternative names. It also indicates whether the certificate is valid or has errors.

Is the SSL scanner free?

Yes. This SSL certificate scanner is free to use with no signup required. Only public HTTPS URLs can be checked.

Free Tool

SSL Certificate Scanner

Check SSL/TLS certificate validity, issuer, and expiry for any HTTPS URL.

This free SSL scanner checks the TLS/SSL certificate for any HTTPS site. See expiry dates, issuer, subject, and SANs at a glance. Useful for monitoring certificate validity and avoiding expired certs.

Frequently asked questions

What does an SSL scanner check?: An SSL scanner connects to the server over HTTPS and reports the certificate's subject, issuer, validity period (notBefore, notAfter), and subject alternative names. It also indicates whether the certificate is valid or has errors.
Is the SSL scanner free?: Yes. This SSL certificate scanner is free to use with no signup required. Only public HTTPS URLs can be checked.