Only what your site delivers to every visitor anyway.
- Angular
- The version is in the HTML of your start page, in the
ng-version attribute, or in the JavaScript files it loads. - AngularJS
- The version is in the JavaScript files your site loads.
- PHP
- The version is in the
X-Powered-By server header, if your server sends it. - Security basics
- HTTPS, certificate and protective headers, as a separate list next to the maintenance status.
The quick check only reads publicly visible content and is not a security audit.