SSL Checker

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Free SSL Checker – Verify Any Website's SSL Certificate Instantly

MerkSEO's SSL Checker validates the SSL/TLS certificate of any domain and displays key details including the certificate issuer, validity period, expiry date, encryption protocol, and certificate chain status. Enter any domain to see its SSL health at a glance.

An expired or misconfigured SSL certificate triggers browser security warnings and can get your site flagged or deindexed by search engines. Use our free SSL Checker to verify your certificates are valid and current, monitor upcoming expiry dates, and troubleshoot HTTPS issues before they affect your visitors or rankings.