SSL & TLS Inspector
Complete certificate and TLS analysis - chain, SANs, key, protocol, cipher, and expiry, on top of a full health check.
- Secure
- Fast
- Anonymous
- No signup required
What this scan checks
Real-time verificationCertificate
Validity, issuer, and trust chain.
Chain
Trust-chain completeness.
Expiry
Days until the certificate expires.
Why use SignNexa?
Secure by design
Every check is read-only and runs from our servers. We don't store your scan or domain data.
Instant results
Domain, DNS, SSL, and email are checked together and scored in a few seconds.
Actionable fixes
Each issue comes with a plain-language explanation and a copy-ready fix.
About the SSL & TLS Inspector
What this checks
The inspector reads the SSL/TLS certificate a domain presents and reports the essentials: is it valid and trusted, who issued it, which hostnames it covers, when it expires, and whether the certificate chain is complete. This is the certificate that turns the padlock on in a browser and encrypts everything between your visitor and your server.
How to read the result
The expiry date is what to watch - an expired certificate throws a full-page browser warning that stops visitors cold, and it happens on a fixed date whether or not anyone is watching. A broken or incomplete chain can make a valid certificate fail on some devices while working on others, which is the hardest kind of problem to diagnose after the fact. Coverage tells you whether every subdomain you use is actually protected.
What to do next
If expiry is near, renew now and enable auto-renewal - most modern certificate providers can do this automatically. If the chain is incomplete, your server is missing an intermediate certificate. Because certificates expire on a schedule, this is the classic thing to monitor: Nexa Monitor alerts you well before the date rather than after the outage.