How to Install Fonts in Windows 11

How to Change a File Extension in Windows

Common file name extensions in Windows - Microsoft Support

What is a file extension?

Rename a File Extension Easily on Phone, PC or Mac Computers

windows 7 - Use File TypesMan to change extension setting, but it show this file type may affect the following extensions - Stack Overflow

PRN File - What is .prn File and How to Open It?

FontARA Font Changer extension - Opera add-ons

4 Ways to Change a File Extension - wikiHow

RTF File - What is an .rtf file and how do I open it?

Explainer: File Types – text/plain