In a similar spirit there is also a site to scan security headers of any site [1] and another to verify the TLS settings from the Mozilla SSL Configuration Generator [2] and a git repo with code to scan sites from the command line [3] useful if the site is not reachable on the internet or automated scans to HTML reports.
[1] - https://securityheaders.com/
[2] - https://www.ssllabs.com/ssltest/
[3] - https://github.com/testssl/testssl.sh