FileMagic can be considered a reliable file viewer that streamlines the process of viewing, and managing a large range of file extensions, including the often confusing and varied "dot" file types.
If you need to work with frequently-used formats like .pdf, and even less common formats including . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/