When your SSL certificate expires, browsers show a full-screen security warning. Most visitors leave immediately. Your site effectively goes dark.
What Happens When SSL Expires
Browsers block access with a red warning screen
Search engines may deindex your HTTPS pages
Forms and login functionality stop working
API calls from other services fail
How to Check Your SSL Expiry Date
Enter your URL into Broken Link Checker Online. Our enhanced scan checks SSL certificate validity, expiry date, and issuer information.
You can also check manually with OpenSSL: openssl s_client -connect yourdomain.com:443 < /dev/null 2>&1 | openssl x509 -noout -enddate
How to Prevent Expiry
Set up automatic renewal with Let's Encrypt (free, 90-day certificates)
Add calendar reminders 30 days before expiry for manual renewals
Use premium monitoring: Broken Link Checker alerts you when your cert is within 30 days of expiry
Certificate Chains
Sometimes the certificate itself is valid but the intermediate certificate is missing. This can cause errors even with a valid cert. Our scanner detects incomplete certificate chains.