When you can determine a file extension or file type, this will let you know the app that can open it. File extensions are usually three to four letters that come after the file name.
An example of file extensions are txt for text files, doc for Word documents, mp4 for a video file, and mp3 for audio files etc. Microsoft makes it very easy for someone to quickly show or hide file extensions.
In this video, I will be showing you How to Show or Hide File Extensions on Windows 11: https://techdirectarchive.com/2023/11...