About the WordPress Theme Detector
The WordPress Theme Detector reads a site's public HTML, identifies the active theme (name, version, author from its style.css — including child/parent relationships) and lists every plugin that loads assets on the page. Handy for competitor research or "which theme is that?" moments. Works purely on public markup — nothing is probed beyond the page and its stylesheet.
Caching/optimization plugins and custom builds can rewrite or hide /wp-content/ paths. In that case even the theme slug is not exposed — which is exactly what those plugins are for.
Only plugins that load assets on the scanned page reveal themselves via /wp-content/plugins/ URLs. Backend-only plugins stay invisible.
Yes — the tool only reads the public HTML the site sends to every visitor. Nothing is probed beyond the page and its public theme stylesheet.