File-Magic is a powerful file-handling software that makes easy the process of managing, and handling a large range of file extensions, especially the often confusing and diverse "dot" file types.
In case you encounter common file extensions including .jpg, as well as more obscure ones like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/