Using the same method as how we batch rename files, we can also change the file extensions of a series of files easily, without the need of any software. All you need is a Notepad or any other text editor.

I am not a fan of installing new softwares for every single task I want to perform on my computer. There are many softwares, both free and commercial, that will do batch or bulk files renaming, but the fact is, all you need is just a notepad (on Windows).
The only downside of this method of [...]