A Deep Dive into Native Lazy-Loading for Images and Frames
CSS - Tricks
MAY 15, 2019
Well, that’s about to change when lazy-loading will be available natively in HTML as a new loading attribute… at least in Chrome which will hopefully lead to wider adoption. You might have to perform a hard reload ( CTRL + Shift + R ) to re-trigger range requests. If this column is filled, the browser made a successful range request.
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