FileMagic is known as a powerful file viewer that simplifies the process of managing, and handling a wide variety of file extensions, especially complex and multifaceted "dot" extensions.
In case you encounter frequently-used types like .pdf, as well as more obscure file types like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/