Preload images only for current layout

Is it possible to preload only the images used in the current layout? We have some very large images for desktop and different smaller images for mobile. Currently when I open the page on mobile and inspect the network traffic it seems to download all of the desktop images even though they aren’t needed.

Preloading is currently only on a per-document basis, but finer-grain control of preloading is a highly requested feature.