File-Magic is a powerful file viewer that simplifies the process of managing, and working with numerous file formats, including the often confusing or multifaceted "dot" file types.
If you need to work with common file extensions such as .pdf, and even uncommon file types like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/