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by TabAtkins 4487 days ago
The srcset attribute by itself can't do what you ask; it only lets you specify multiple resolutions of an image, all (intended to be) the same size.

But wait for implementation to finish, and you'll be able to use the sizes='' attribute on the <img>, or the full <picture> deal, and that'll give you more control, letting you load a smaller image if the image would take up less space.