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Diagnosis
Technical Summary
Certificate Chain
Frequently Asked Questions
How do I check my SSL certificate?
Type your domain into the box above and run the query: SSLx verifies the certificate chain with a real TLS handshake and reports expiry, hostname matching, TLS version and HSTS status in one view. No signup needed.
Is SSLx free?
Completely. No accounts, no registration, no query limits; every feature is open to everyone.
Why does certificate chain verification matter?
Even with a valid certificate, some browsers will distrust your site if the server does not send the intermediate certificate. SSLx verifies the chain link by link and points at the broken spot. See the certificate chain guide for details.
Are pasted certificates or CSRs stored on your server?
No. Decoding in the paste tab happens on the fly; nothing is saved or passed to any third party.
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