This article explains how to change file extensions in Windows 11, as well as discusses the difference between file extensions and file types.

So you have this file and you don’t know how to open it. The person who sent it to you doesn’t seem to know either, and your deadline is ticking nearer. What do you do? Head to Go2Convert.com.

How can I change the file type from application/x-perl to application/octet for example so the file will be prompted for download versus displayed in text ...