Let'sEnhance uses machine learning to enhance low resolution JPEG images, boosting resolution 4x times
ImageKit.io is a real-time image optimization and transformation product that helps you improve the performance of your website or app by reducing the image size without compromising on visual quality. It also provides real-time URL-based image resize, crop and other transformation options. Quick integration with leading storages and platforms.
Optimage is an advanced image optimization tool to compress images in a visually lossless way.