How to Search Google by File TypeSearch Google by file type using the “filetype:” search operator. This operator narrows the search results to a specific file type. For example, if you want to search for results only from a specific site, you can use the “site:” search operator. For more information on search operators and how they work, check out our complete guide to Google Search Operators. Ensure Your Files Get Indexed in GoogleIf you have content in different file types (e.g., xls, pdf, ppt, etc.