It doesn’t matter why you want to convert your images. What’s important is that you know how to do it without wasting time and energy. Do you still find yourself waiting for each folder of photos to be converted separately? If you have a huge photo collection organized in folders and subfolders it might be useful to have the ability to convert them or resize them all at once. So, it’s up to you to decide whether to convert only specific folders, or all the photos at once including the ones in subfolders.