Do you want to batch rename file extensions in one simple step? Changing each file extension separately can be a pain in some cases where you have to change extensions of more than 100 files. There are two methods of changing batch file extensions quickly.
Method 1: Command Line
Select the folder which has all the files who’s extension you would like to change. As an example I have made a folder named “test”, inside this folder I have placed four images in .jpg format. To change the extension of the files inside the folder, press Shift and right-click on the folder and select Open Command Window Here.
You will now see a Command Window with the current folderdirectory open. Now type the following command line,
ren *.(current extension name) *.(extension you want)
Since I want to change the extension from .jpg to .jpg, in my case the command line would be,
ren *.jpg *.jpg
Now all the files inside the folder will change to the extension you want. It’s that simple.
Method 2: Using Extension Changer
Extension Changer is a cool little software that lets you change the extension easily. Since the command line method is limited to few extensions, this software can change almost any extension.
All you have to do is drag the file who’s extension you would like to change. If you want to batch change the file extensions, then you can drag the files one by one or you can drag the whole folder(it will also ask if you would like to include the sub folders or not) which contains the files.
After selecting the files, enter the extension you want to change it into and click Change.
Since there is no restriction on the number of files who’s extension can be changed, you can change the extensions of as many files as you want, even if they are 1000s of files.