Above the fold image

Lazy loading <img> with srcset

Scroll down...

Lazy loading `<img>` using `src`

Lazy loading <img> with src

Lazy loading `<img>` using `srcset`

Lazy loading <img> with srcset

Lazy loading `<picture>`

Lazy loading <img> with src

<noscript> fallback for <img> with src

Lazy loading `<video>`

Lazy loading `<iframe>`

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