DevOpsKing / Security Tools
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Transport Layer Security

TLS Checker

Inspect a public website's TLS certificate, expiry, issuer, hostname match, supported TLS protocols, and certificate chain details.

Enter a hostname, optionally with a port. This checker connects to public HTTPS services only. Use it only for systems you own or are authorized to assess.

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TLS grade

TLS scan results

Score: —Expiry: —Issuer: —

Certificate details

TLS protocol support

Certificate chain

Recommendations

TLS grades are indicative. Protocol probing depends on the server's OpenSSL build and network access; certificate-chain output shows certificates provided by the remote endpoint and may not include a root certificate.

DevOpsKing · TLS Checker · Requires PHP with cURL and OpenSSL extensions enabled.