File-Magic can be considered a versatile file viewer that streamlines the process of managing, and managing a large range of file types, especially hard-to-handle and varied "dot" file types.
In case you encounter common formats including .pdf, as well as less common ones like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/