3 free tools · no sign-up

Website Health Tools

Diagnose and monitor your website. Instant results, completely free.

SSL Certificate Checker

Check any domain's SSL certificate — expiry date, issuer, trust status, and SANs. Instant, free.

Measure DNS, TCP, TLS, TTFB, and download time. Get a performance grade and security headers audit.

Calculate exactly how much downtime your SLA allows per year, month, week, and day. Includes revenue loss estimate.

These tools give you a snapshot. Uptime Assure monitors your site 24/7 and alerts you the moment something goes wrong.