WordPress Theme Detector

How Theme Detection Works

WordPress sites load their active theme's files from a predictable location — wp-content/themes/theme-name/ — which is visible in a site's public page source. This tool fetches that source, looks for the theme's folder name, then reads the theme's style.css file, where WordPress requires every theme to declare its name, author, version, and description in a standard comment header.

It only works on WordPress sites, and only when the theme's files are publicly reachable, which is true for the vast majority of live WordPress installs. It won't detect individually installed plugins, since those aren't declared in the page source the same predictable way.