TLS Certificate Checker
Inspect SSL/TLS certificates, chain, and cipher details for any hostname
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Requires Server Deployment
TLS certificate inspection cannot be performed from the browser — it requires a server-side TLS socket connection to read the certificate chain.
Enter a hostname below to generate the command you can run locally:
echo | openssl s_client -connect example.com:443 -servername example.com 2>/dev/null | openssl x509 -noout -textThis command uses OpenSSL to connect to the server and display the full certificate details including subject, issuer, validity dates, SANs, and chain information.