SSL certificate checker
Check a domain's SSL certificate - expiry date, issuer, and chain validity. We make a single live connection to it and report back the result - nothing is saved.
This tool opens a single live TLS connection to the domain you enter and reads back the certificate it presents - expiry date, issuer, subject, and how many certificates are in the chain. It's a quick way to confirm a certificate is valid and not about to expire, without digging through browser dev tools.
For a certificate you rely on, a single manual check isn't enough - you won't know it's about to expire unless someone's watching. Kawze monitors SSL certificates on a schedule and alerts you by email or SMS before they expire.
Frequently asked questions
What counts as a certificate "issue"?
An expired or not-yet-valid certificate, a self-signed certificate, an untrusted issuer, an incomplete chain, or an expiry date close enough to trigger a warning threshold.
Does this check store or log the domains I check?
No. Each check is a single live TLS connection made on demand - nothing is saved or associated with your account.
Why does it say the chain is incomplete?
The server didn't present any intermediate certificates alongside the leaf certificate - browsers can sometimes still complete the chain themselves, but a misconfigured server should send the full chain.
How is this different from Kawze's SSL monitoring?
This tool is a one-off manual check. Kawze's SSL monitoring checks your certificates on a schedule and alerts you automatically before they expire.