All you need is to create a BAT file to run via Command Prompt on your Windows 11 or Windows 10 PC. No matter how many files you have or how many file extensions, all will be categorized within ...

A batch file uses ".bat" as its file extension. You run batch files the same way you run other files—simply double-click a file to launch it. No third-party apps are needed to open batch files.

Learn how to rename all file extensions in a folder & sub-folders at once on Windows 11/10. You can batch rename or rename all file extensions in bulk using this guide.