Free SSL Certificate Monitoring
upsonar.io monitors your SSL/TLS certificates and alerts you before they expire. Validates certificate chains, checks TLS protocol versions, and verifies issuer trust — automatically, every day.
Alerts at 30, 14, 7 days before expiry · Chain validation · Free plan available
Why SSL Monitoring Matters
Browser Warnings
Expired SSL = full-page security warning. Most visitors leave immediately. Your site is effectively offline.
Silent Renewal Failures
Auto-renewal fails silently due to DNS changes, firewall rules, or expired payment methods. Independent monitoring catches this.
30-Day Early Warning
Get alerts at 30, 14, and 7 days before expiry. Plenty of time to renew or fix auto-renewal issues.
What We Check
Certificate Validity — Is the certificate trusted by browsers and not revoked?
Expiration Date — Exact expiry date and days remaining. Alerts at 30, 14, 7 days.
Certificate Chain — Complete chain validation — root, intermediate, and leaf certificates.
TLS Protocol Version — TLS 1.2, 1.3 support. Detects deprecated protocols.
Issuer Details — Certificate Authority name, organization, and trust status.
Domain Match — Certificate covers the correct domain and subdomains (SAN/wildcard).
Check Your SSL Certificate Now
Free instant SSL check — validity, expiry, chain, TLS version. No signup required.