Free SSL certificate monitoring

Never let an SSL certificate expire again

Free SSL Tester monitors your websites every hour and warns you before your certificates expire. Simple setup, reliable alerts.

Automatic Monitoring

Your SSL certificates are checked automatically. Free users get daily checks, Pro users get hourly monitoring.

Expiry Alerts

Get notified before your certificates expire. Free users get alerts at 7 and 1 day. Pro users get customisable alerts from 30 days out.

Domain Monitoring

Free users can monitor 1 domain. Pro users get unlimited domains and subdomains, each verified and tracked independently.

Simple pricing

Start free, upgrade when you need more.

Free

£0 /month
  • 1 domain
  • Checks once per day
  • No email alerts
Get Started Free
Most Popular

Pro

£0.99 /month
  • Unlimited domains and subdomains
  • Checks every hour
  • Email expiry and recovery alerts
  • Certificate chain details
  • Custom alert thresholds
  • Webhook notifications and API access
  • CSV export
  • Mobile app with push notifications
Start with Pro

How it works

1

Add your domains

Enter any domain or subdomain you want to monitor. We support everything from example.com to api.staging.example.com.

2

Verify ownership

Prove you own the domain with a simple DNS TXT record or by placing a verification file on your server. Quick and painless.

3

Relax

We check your certificates daily (or hourly on Pro) and email you well in advance if anything needs attention. View your full SSL history on your dashboard.