Variations on the Mobile WebAvoid images for UI components: buttons, gradients, etc. Often unavoidable (eg. photo gallery). Goal: serve the high quality images efficiently Overview of approaches: Optimized single image. Optimizing to pick the best from a set of images. Problem: high DPI images → large file size! 2x retina images are often 3-4x times larger at the same compression WebP 30% smaller than JPEG (but no good way t
