Letter grade for your TLS and certificate configuration. Runs a server-side TLS handshake, checks protocol version, cipher suite, certificate chain validity, days until expiry, OCSP stapling, HSTS header, and post-quantum readiness, then rolls up to A / B / C / D / F. See the walkthrough for the rubric. Less technical than the PQC Analyzer. For quantum-specific concerns use that one.
Read the story behind this tool: An A-F Letter Grade For Your SSL Config. Because 'TLS 1.2 with SHA256 AES-GCM' Isn't A Sentence For Most Owners →