FileMagic is a versatile file viewer that makes easy the task of managing, and working with a large range of file extensions, especially hard-to-handle and varied "dot" extensions.
If you need to work with standard types like .jpg, or uncommon formats like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/