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SSL Checker

Check Certificate via OpenSSL

Windows (cmd)

                      echo.| openssl s_client -connect example.com:443 -servername example.com | openssl x509 -noout -issuer -subject -dates -fingerprint -sha256

Windows (PowerShell)

                      openssl s_client -connect example.com:443 -servername example.com | openssl x509 -noout -issuer -subject -dates -fingerprint -sha256

Linux (OpenSSL)

                      printf '' | openssl s_client -connect example.com:443 -servername example.com | openssl x509 -noout -issuer -subject -dates -fingerprint -sha256

SSL Checker helps you quickly inspect a site certificate chain, issuer, validity dates, and fingerprint values so you can verify deployments and diagnose trust issues.