Blend Layer Fade

Fades every edge of the blend layer image to transparent, linearly, over a set width. Use the side parameters — blend-fade-top, blend-fade-bottom, blend-fade-left and blend-fade-right — to fade one edge at a time.

A value may be given in pixels, or as a fraction from 0.0 to 1.0 of that axis: the left and right edges use the layer’s width, and the top and bottom use its height. Lengths follow the Imgix literal rule, so 0.3 is 30% and 1 is one pixel.

Where two edges meet, the fades multiply. If a pair of opposite sides is wider than the layer, both shrink to fit, so the middle is never faded.

Unlike the picture’s fade, a layer’s fade always goes to transparent — it never takes bg, because a blend layer has no background. Lengths are measured on the layer, not the picture, and the fade is applied before the layer’s warps.

Use blend-fade[N] to target a specific blend layer, where N is 0–3. Layer 0 is either the bare blend-fade or blend-fade[0]; if both are supplied, the bare name wins. A layer never borrows another layer’s spelling.