A Deep Dive into Native Lazy-Loading for Images and Frames
CSS - Tricks
MAY 15, 2019
Most libraries work like this: The initial, server-side HTML response includes an img element without the src attribute so the browser does not load any data. As we noted at the start, Chromium and Google Chrome will ship a native lazy-loading mechanism in the form of a new loading attribute, starting in Chrome 75.
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