File Magic can be considered a reliable file-handling software that makes easy the task of opening, and working with a large range of file types, including complex or diverse "dot" extensions.
If you need to work with common file extensions like .jpg, and even uncommon formats such as . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/