Quick Example

Following dynamic URL, crops the original image to a 400x320 image, sets gravity to bottom right corner to cut out the Hibiscus flower, and takes the hummingbird to center. Also activates auto format. So, if your browser supports webp format, you see a webp image. If it doesn't, new image's format will be same as the original one's format which is jpeg for this image

http://cdn.image4.io/i4io/demo-images/hummingbird.jpeg

http://cdn.image4.io/i4io/c_crop,w_400,h_320,g_bottom_right,f_auto/demo-images/hummingbird.jpeg