Never let a certificate
expire unnoticed
Monitor SSL/TLS certificates across all your domains. Get alerted before expiry, on certificate changes, and when renewals complete.
Start Monitoring SSL — FreeFree for 1 monitor. No credit card required.
How it works
Enter a hostname
Type your domain name — example.com. Set how many days before expiry you want to be warned.
We check certificates
Our monitors connect to your domain and read the TLS certificate. No access or setup needed on your end.
Get alerted on changes
Certificate expiring? Changed? Renewed? You get an email immediately.
Features
Any hostname
Monitor any domain's SSL certificate. Just enter the hostname — no agents or scripts to install.
Expiry countdown
Know exactly how many days until your certificate expires. Get warned well before it causes downtime.
Custom warning threshold
Set your own warning window — 7 days, 30 days, 90 days. Get alerted when it's time to renew.
Certificate change detection
Get notified when a certificate is replaced or its fingerprint changes. Catch unauthorized changes.
Issuer tracking
See who issued the certificate. Detect unexpected issuer changes that could indicate compromise.
Multiple domains
Monitor all your domains from one dashboard. Track certificates across staging, production, and CDN endpoints.
Stop worrying about certificate expiry
Free for 1 monitor. Upgrade to Pro for 10 monitors and 15-minute checks.