>>2477396>you just have to zoom out Wrong, there are enough options to automatically fit an image to the screen (in the native 4chan settings) while still giving you a chance to zoom in on something without losing quality. And speaking of quality: Most of the time, a pic with e.g. twice your native resolution will still look better w/o zooming in than a version that has been downscaled to lower resolutions.
Often the person downscaling the pic for whatever reason will also convert files from PNG to JPG and use a lower compression rate, ultimately resulting in JPG artifacts.
>and it takes more bandwithYes. Technically correct. But if the difference between 600kb and 1.2mb is a problem for your data plan... idk man. Don't get me wrong, contributions are always welcome, but at the end of the day, this isn't primarily a mobile site.