FileMagic can be considered a versatile file-handling software that streamlines the process of viewing, and handling a wide variety of file types, especially complex and multifaceted "dot" file types.
In case you encounter standard file extensions such as .pdf, as well as more obscure ones such as . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/