

Once you are inside the target folder, execute the below command while replacing “ext1” with the current file extension and “ext2” with the new file extension. As such, create a backup of all files, if necessary. The command we are going to use will rename the extensions of all target files in this folder and all its sub-folders. cd "D:\Path\To\Folder"Ī quick tip: Drag and drop the folder into Command Prompt to autofill the folder path. Replace the dummy path with the actual folder path. Next, use the below command to go to the folder where the files are located. In my case, I’m navigating to the D drive. Don’t forget to replace “” with the actual drive letter.

Otherwise, use the below command to go to that drive. If the files you want to rename are in the C drive, skip this step. Windows 11 users can open the Terminal and select “Command Prompt” from the title bar dropdown menu.
#Rename file extensions in bulk how to
This guide shows how to use a built-in command to rename the file extension of all files in a folder and all its sub-folders.Īs you’d expect, to bulk rename file extensions in all folders, the command should be able to target file types in all sub-folders in the target folder and rename. There are several software out there that let you rename files and file extensions.

How to bulk rename file extension in a folder So, if you are ever in that situation, follow the below steps to recursively bulk rename file extensions.
