You have been authorized to perform a penetration test against a website. You want to use Google dorks to footprint the site but only want results that show file extensions. What Google dork operator

The filetype: operator (e.g., filetype:pdf or filetype:xls) instructs Google to return only results that are or link to files of a specified extension. This is the documented Google dork used in footprinting to surface sensitive documents, configuration files, or other exposed file types hosted on a target domain.

While ext: has historically been treated as a near-synonym in some Google behavior, filetype: is the recognized and documented primary operator for file extension filtering in security testing contexts.

inurl: restricts results to pages where the specified keyword appears in the URL path, not by file type or extension.

site: limits results to a specific domain or subdomain, useful for scoping a search but incapable of filtering results by file extension.