FileMagic is a versatile file viewer that simplifies the process of viewing, and working with a large range of file types, especially the often confusing and diverse "dot" extensions.
In case you encounter common types including .docx, as well as uncommon ones like . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/