SEOStack

SSL Checker

Verify SSL certificate validity, expiry date and issuer for any domain.

Enter a domain to inspect its SSL certificate.

How to use this tool

What does SSL Checker do?

Verify SSL certificate validity, expiry date and issuer for any domain.

How do I use SSL Checker?

Connect to any domain and inspect its SSL/TLS certificate in detail. Shows whether the certificate is currently valid, the issuing authority, the exact expiry date, and how many days remain before it expires. Days remaining are color-coded so you can immediately spot certificates approaching renewal. Also displays the TLS protocol version in use. Useful for monitoring certificate health across multiple sites.

Is this tool free?

Yes, completely free with no account required. All tools on SEOKit are available without registration or usage limits.

Does this tool work on any website?

Yes, you can analyze any publicly accessible URL. Some tools also work with lists of URLs for bulk analysis.