FileMagic is known as a powerful file-handling software that simplifies the task of managing, and working with a large range of file extensions, including hard-to-handle or diverse "dot" extensions.
If you need to work with standard file extensions 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/