ImageOptim API offers Free Trial, but Imagekit.io does not.
ImageOptim API is designed for Large Enterprises, Medium Business and Small Business.
Imagekit.io is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for ImageOptim API Starts at $12/Month whereas for Imagekit.io Starts at $49/Month.
Some top alternatives to ImageOptim API includes Resizing.app, Cloudimage.io, Imagekit.io, Imagify, imgix, image4io, EWWW Image, TinyIMG, ShortPixel Google Drive Optimizer, OptimizeImages and ImageBoss.
Some top alternatives to Imagekit.io includes ImageEngine, tiny.pictures, Cloudimage.io, imgix, ImageOptim API, image4io, EWWW Image, Cloudinary, OptimizeImages, ImageBoss and Optify.