Server-Side Tool
Domain SSL Security Grade
Get an instant A-F security grade for any domain. Checks TLS version, cipher suites, certificate health, HSTS, and known vulnerabilities.
Coming Soon
Our domain grading tool will provide a comprehensive A-F security score based on TLS configuration, certificate health, and compliance with best practices.
Grading Criteria
A
TLS 1.3, strong ciphers, valid cert, HSTS, complete chain, no vulnerabilities
B
TLS 1.2 only, some weak ciphers allowed, missing HSTS
C
Weak ciphers (CBC), incomplete chain, approaching expiry
F
Expired cert, TLS 1.0/1.1, known vulnerabilities, self-signed