Enter a domain to check whether a website is down, served over an insecure / no-HTTPS connection, loading slowly, or showing an expired SSL certificate. Browsers block scripts from probing another site's certificate or uptime directly, so this hands the actual scan to our server-side checker and shows you exactly what's wrong — free, no account.
A page in your browser can't legitimately read another domain's SSL certificate, HTTP status code, or response time — the same-origin policy blocks it. So when you submit a domain, the check runs on our server and returns a plain-English report of what's broken and what to do about it next.
This checker runs a real test from our server and shows you the result instantly — enter a domain you own or manage. We only store an email if you ask for the full fix plan.