smart candidate selection for responsive images

configure devicePixelRatio and src strategy

xQuant

xQuant will be multiplied with your devicePixelRatio. Hint: If you are using a 2dpr device you can set 0.5 to simulate 1dpr device. In case you are using 1dpr you can set 2 to test a 2dpr device.

empty/transparent data URI low quality image placeholder medium/random quality candidate (for lazyFactor testing)

configure candidate selection

maxX

The maximum DPR to be considered in source candidate selection

lazyFactor

How lazily should respimage change src on resize or more important initially (see src strategy above). (try this in conjunction with the medium/random quality src strategy or with resize)

viewport width

oninput / onchange

Wether viewport should be changed while dragging (input/checked) or on drag release (change/unchecked).