SSL Certificate Checker
Verify your SSL/TLS certificate is valid and check when it expires. Avoid browser security warnings that scare away visitors.
Free tool • No signup required • Check any HTTPS website instantly
What This Tool Checks
Why SSL Certificates Matter
Browser Trust: An expired or invalid SSL certificate triggers security warnings in all modern browsers. Chrome, Firefox, and Safari will display a full-page warning that most users won't bypass — they'll simply leave your site.
SEO Impact: Google uses HTTPS as a ranking signal. Sites with valid SSL certificates rank higher than those without. An expired certificate can hurt your search rankings.
Renewal Reminders: Most certificates expire every 90 days (Let's Encrypt) or annually. Auto-renewal can fail silently when payment methods expire or DNS changes. Regular monitoring ensures you never miss a renewal.