SSL Certificate Checker

Verify SSL/TLS certificates, check expiry dates, issuer details, and HTTPS security configuration for any domain - free and instant.

Checks certificate validity, expiry, issuer chain, and protocol support

What does the SSL Checker verify?

  • Certificate validity and expiry date
  • Certificate issuer and chain of trust
  • Domain name coverage (CN and SANs)
  • SSL/TLS protocol version support
  • Days remaining until expiration
  • Self-signed vs. trusted CA certificates

Why check your SSL certificate?

SSL certificates expire and must be renewed regularly. An expired or misconfigured certificate causes browser warnings that drive visitors away and harm your search engine rankings. Google has used HTTPS as a ranking signal since 2014. Regular SSL checks ensure your site remains secure and trustworthy for visitors.

SSL certificates also protect data in transit between your server and users. A valid certificate proves your site's identity and encrypts sensitive information like passwords and payment details.