Image Optimizer optimizes allows you to save space on your smartphone by optimizing your image files. Image Optimizer supports two optimization techniques, you have the choice: ★ compress your photos to save a big amount of space with a slight, often unnoticeable quality loss ★ just optimize your picture while retaining the original quality If you have questions, bugs, suggestions, please contact me by mail, don't use the market comment as It's impossible for me to reply and help you! Both J