Check a website certificate, trust chain, TLS protocol support, selected cipher and HSTS.
The scan runs from the InetTools server through OpenSSL. It checks the certificate, chain, TLS protocols and HSTS; it does not submit the host to SSL Labs.
Paste a domain, HTTPS URL or hostname with a port. Only the public TLS endpoint is checked; the URL path is not requested. The timeout applies to each connection, so a complete scan can take longer.
Quick start
Check a public TLS endpoint, review certificate expiry and download the complete report.
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Paste a domain, URL or host with port
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Start the server-side TLS check
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Review certificate, protocols and report limits
SSL/TLS test online
Run an SSL/TLS test for a public website and inspect the certificate, hostname match, expiration date, issuer, trust chain, supported protocol versions, selected cipher and HSTS header.
The report gives an overall grade and practical diagnostics similar to the key parts of SSL Labs, helping detect expired certificates, hostname mismatches, legacy TLS support and missing HTTPS hardening.
✓Run the SSL check after issuing a new certificate, moving hosting, changing CDN or configuring a reverse proxy.
✓If the certificate expires soon, renew it early and verify that automatic renewal works.
✓A hostname mismatch with certificate CN/SAN names usually causes a browser warning.
✓TLS 1.0 or 1.1 support is considered legacy and can reduce the security grade.
✓HSTS tells browsers to keep using HTTPS, but it should be enabled only after the HTTPS chain is checked.
✓The final grade is not a full security audit, but it quickly highlights the most visible configuration problems.
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