Free SSL Certificate Checker

Check SSL Certificate

Enter a domain name to check its SSL certificate status, expiration date, issuer, and configuration.

What Does an SSL Checker Do?

An SSL checker connects to a website's server, retrieves its SSL/TLS certificate, and analyzes it for potential problems. It performs the same verification steps that a browser does, but presents the results in a detailed, human-readable format.

What Information Can You Learn from Checking SSL?

• Certificate validity - Whether the certificate is currently valid, expired, or not yet active
• Expiration date - When the certificate expires and how many days remain
• Issuer - The Certificate Authority that issued the certificate
• Domain coverage - Which domain names are covered by the certificate
• Certificate chain - Whether the full chain of trust is properly configured
• Protocol support - Which TLS versions the server supports
• Key size - The bit length of the certificate's public key

Common SSL Certificate Problems

• Expired Certificate - The most common problem. Generate a new free certificate at any time.
• Self-Signed Certificate - Not issued by a trusted CA. Replace with a Let's Encrypt certificate.
• Hostname Mismatch - Domain in browser doesn't match the certificate. Generate a new certificate covering all domains.
• Incomplete Certificate Chain - Server not sending intermediate certificates. Include the CA bundle.

Need a New SSL Certificate?

If your SSL check reveals an expired or misconfigured certificate, get a free replacement in minutes.