SSL Checker

Enter a domain name:

About SSL Checker

An SSL certificate is what turns http:// into https://, encrypting traffic between your visitors and your server. Browsers now flag sites without valid SSL as "Not Secure", which kills trust and can hurt rankings. Our free SSL Checker inspects any domain's certificate in seconds.

Enter a hostname to see the issuer, expiry date, protocol version, and whether the chain validates correctly, everything you need to catch an expiring or misconfigured certificate before your visitors do.

What to watch for

Expiry dates: renew well before the deadline to avoid downtime warnings.
Chain issues: intermediate certificates must be installed or some devices will distrust you.
Mixed content: even with valid SSL, hardcoded http:// assets trigger warnings.