FileMagic is known as a powerful file management tool that makes easy the task of viewing, and working with a wide variety of file formats, such as hard-to-handle or diverse "dot" extensions.
If you need to work with common formats such as .pdf, or less common file types such as . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/