Photographs can be scaled and compressed. The source of most megabytes visiting a website eats is the stylesheets and the JS the site itself loads, and then wh

Photographs can be scaled and compressed. The source of most megabytes visiting a website eats is the stylesheets and the JS the site itself loads, and then what these in turn load from third parties for tracking, analytics, ads, &c, and the constant communication all these scripts do with numerous servers. For most big sites, watching the network connection log using the developer tools is an enlightening experience.