Enter a hostname to check its TLS configuration, certificate, protocols, and HTTP/2 support.
This tool connects to a host on port 443 and summarizes its TLS configuration. It reports the certificate details, supported TLS versions, negotiated cipher, HTTP/2 support, and an overall grade.
Use it to quickly spot weak protocols (such as TLS 1.0/1.1), expired certificates, or missing modern features before running a full external scan.