SSL Checker
Check your SSL certificate, expiry date and security headers. Ensure your site is properly secured.
What do we check?
Our tool analyzes 4 key aspects of your website's SSL and security configuration.
Certificate Information
We check the SSL certificate issuer, subject, signature algorithm and Subject Alternative Names (SAN) to verify its authenticity.
Expiry Date
We verify the certificate validity period and warn you when it's about to expire. An expired certificate causes browser warnings and loss of trust.
HTTP to HTTPS Redirect
We check if your site automatically redirects HTTP traffic to HTTPS. Without this redirect, visitors may access an unsecured version of your site.
Security Headers
We analyze 7 critical HTTP security headers including HSTS, CSP, X-Frame-Options and more. These headers protect against XSS, clickjacking and other attacks.
Frequently Asked Questions
Enter the site address in the form above — the tool connects to the server, reads the SSL certificate and shows its expiry date, issuer, protocol version and security headers. Free and with no registration.
Browsers immediately show a full-page warning that the connection is not secure, and most visitors leave the site right away. That means lost traffic, lost sales and damaged trust — so set up auto-renewal and monitor the expiry date.
Yes. HTTPS has been an official Google ranking signal since 2014, and Chrome marks HTTP pages as not secure. A valid SSL certificate is now a basic requirement for both SEO and user trust.
The encryption strength is exactly the same. Paid certificates offer longer support, a financial warranty and organization validation (OV/EV), while Let's Encrypt certificates are free, valid for 90 days and renew automatically. For most websites Let's Encrypt is completely sufficient.
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