After a TLS handshake, we read the certificate the server presents—subject, issuer, validity window, and fingerprints—so you can confirm HTTPS is configured for your public learning site.

Is this a full security audit?

No. It is a quick leaf-certificate snapshot, not a replacement for monitoring, HSTS configuration, or mixed-content checks.

TLS inspection requires an https:// URL. Plain HTTP sites do not expose a certificate in the same way.

Free toolsSSL certificate checker

SSL / TLS certificate checker

Confirm your public site presents a valid certificate—helpful alongside broader site health checks for educators.

HTTPS URL

Performs a TLS handshake and reads the leaf certificate presented by the host—helpful for quick site-health checks on learning sites.

URL

Frequently asked questions

What does this show?: After a TLS handshake, we read the certificate the server presents—subject, issuer, validity window, and fingerprints—so you can confirm HTTPS is configured for your public learning site.
Is this a full security audit?: No. It is a quick leaf-certificate snapshot, not a replacement for monitoring, HSTS configuration, or mixed-content checks.
Why https only?: TLS inspection requires an https:// URL. Plain HTTP sites do not expose a certificate in the same way.

SSL / TLS certificate checker

Frequently asked questions

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