Free SSL Certificate Checker
Instantly verify a site's SSL certificate - issuer, expiration date, TLS version, and hostname match.
Frequently asked
What does this SSL checker verify?
It connects to the domain over TLS on port 443 and reports the certificate issuer, subject, validity dates, days-to-expiry, and negotiated protocol.
Is my scan data stored?
No. The SSL checker performs a single live TLS handshake and returns the result. Only a minimal per-IP counter is retained for rate limiting.
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