[NOTE: Android gallery app might not be too quick to update the changes made to photos so you might see same size/details or in some cases even same photo in gallery app after compression. If this happens, verify the photo using any file manager or explorer app. Please don't leave a bad review for this.]
With focus on usability instead of appearance(simple UI) this app will allow you to compress large photos into smaller sized photos with very less or negligible loss in quality. Now you do not require any desktop or laptop computers with special software for image compression. Apart from compressing photos this app can also resize photos for you.