I want to delete all optimized images.Which was optimized by EWWW Image Optimize

To clarify, do you want to delete all images that were optimized but not delete the ones that aren’t? There really isn’t a quick way to do that, if that is what you mean. Or do you mean you want to un-optimize your images? If so, I’m afraid you can’t. You could restore the originals if it has been less than 30 days but once an image has been optimized, it is optimized.

Please feel free to contact support at https://ewww.io/contact-us/ with any further questions you may have.