Checking SSL certificate…
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Free SSL Certificate Checker

Instantly verify SSL/TLS certificate status, expiration date, encryption strength and live HTTP response code — all in one place.

Understanding SSL Certificates

Enter any domain or URL above. The tool connects to port 443, parses the certificate chain, and reports Common Name, issuing CA, validity window, signature algorithm, and Subject Alternative Names. The live HTTP status probe confirms the server's response code independently.

A valid certificate must cover the domain (CN or SAN), fall within its validity period, and be signed by a trusted CA. Our tool highlights expiry status, days remaining, and issuer details at a glance. You can also click the browser padlock for inline inspection.

  • Data Encryption — Protects credentials, payment info and personal data in transit.
  • User Trust — The padlock signals a secure connection, reducing bounce rates.
  • SEO Boost — Google has used HTTPS as a ranking signal since 2014.
  • No "Not Secure" Warnings — Avoids browser security flags on HTTP sites.
  • PCI DSS Compliance — Mandatory for sites that process card payments.