Test images

img local PNG (relative)

img local PNG (relative to root)

img PNG (remote)

img SVG (relative)

CSS background-image (relative)

CSS background-image (relative to root)

CSS background-image (remote)

img data-uri (ignored)

CSS background-image data-uri (ignored)

CSS background stacked (local and remote)

img srcset

Duplicates of some of the above images, to verify they are not duplicated in resources: