Whether you need to change a single file extension or change a whole folder full of them, you can change your file extension ...

If you want to rename all file extensions in a folder or sub-folder at once on Windows 11 or Windows 10 PC, here is how you can do that. You do not need to use a third-party application as you can ...

However, if you want to make the change in Word or PowerPoint, you must follow the same steps. The list of file extensions will be different as per the app. Here you can find a drop-down list ...

But you can't change a .docx to a .ppt or .avi. You may want to test it out on another file of the same extension first, a document or photo you don't care about, to make sure that you're doing it ...