SSL Certificate Checker
Check if your website has a valid SSL certificate, HTTPS redirect, HSTS header, and TLS configuration. Free instant results.
What we check
How it works
SSL (Secure Sockets Layer) encrypts the connection between your website and its visitors. Without a valid SSL certificate, browsers show a "Not Secure" warning that drives visitors away. Our SSL checker verifies your certificate validity, HTTPS redirect, HSTS configuration, and TLS protocol version — all in seconds.
Results are available in seconds. No installation or server access required — we scan your website from the outside, just like an attacker would.
Frequently Asked Questions
It verifies your SSL certificate is valid and not expired, checks if HTTP requests redirect to HTTPS, validates HSTS headers, and ensures deprecated TLS versions (1.0, 1.1) are disabled.
A valid certificate alone is not enough. You also need an HTTP to HTTPS redirect, a Strict-Transport-Security (HSTS) header, and modern TLS configuration. Our scanner checks all of these.
Use Let's Encrypt (letsencrypt.org) for free, auto-renewing certificates. Most hosting providers (including Forge, cPanel, Plesk) offer one-click SSL installation.
Need a deeper analysis?
Our Pro and Deep scans include OWASP Top 10 analysis, malware detection, exposed files, and up to 27 security scanners with a professional PDF report.