A single high-quality image on, say, a vacation rental website could easily be this large, to say nothing of a gallery of images for just a single property. Unl

A single high-quality image on, say, a vacation rental website could easily be this large, to say nothing of a gallery of images for just a single property. Unless you're explicitly designing for 4G mobile connectivity, a properly-cached and CDN-distributed 1MB payload is absolutely viable.