FileMagic can be considered a reliable file viewer that simplifies the task of viewing, and working with a large range of file formats, including complex or multifaceted "dot" files.
If you need to work with common types such as .pdf, as well as uncommon formats including . https://www.filemagic.com/en/page-layout-files/dot-file-extension/1-solution-for-all-your-dot-file-issues/