Question 1

How do I check SSL certificate expiry?

Accepted Answer

Enter the hostname and run the check. Review “Valid to” and “days remaining” to see expiry risk.

Question 2

What does Authorized mean?

Accepted Answer

It indicates whether the certificate validated during the live TLS handshake. If it’s No, check the authorization error for clues.

Question 3

What is a SAN?

Accepted Answer

SAN (Subject Alternative Names) is the list of hostnames covered by the certificate (e.g., example.com and www.example.com).

Question 4

Can I check a non-443 port?

Accepted Answer

Yes. Set the port field to the service you want to validate (e.g., 8443 or 465).

Question 5

Why is my SSL certificate not trusted?

Accepted Answer

Common causes include expiry, hostname mismatch, missing intermediates, or edge/CDN misconfiguration.

Question 6

Does HTTPS matter for SEO?

Accepted Answer

HTTPS is a baseline trust requirement. Broken HTTPS harms user trust and can complicate crawling and indexing.

SSL Checker: Verify Certificate Validity & Expiry Online