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.

How to change the file extension for multiple files at once If you have a folder full of files that need new extensions, then you can use the Command Prompt to change multiple file extensions at once.

This tutorial will show you how to Select, Copy and Paste, Delete, Rename multiple files and folders on your Windows 11/10 PC easily.