File-Magic is a powerful file-handling software that simplifies the task of managing, and working with a large range of file formats, including hard-to-handle and varied "dot" extensions.
If you need to work with common types such as .pdf, as well as more obscure file types including . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/