FileMagic can be considered a versatile file management tool that streamlines the process of viewing, and managing numerous file extensions, especially complex or multifaceted "dot" extensions.
If you need to work with common types including .pdf, and even less common formats such as . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/