Heatmap
A heatmap visualizes data values through color intensity (warm=high, cool=low), making patterns and concentrations intuitively understandable.
QR code marketing uses heatmaps in two ways. Geographic scan heatmaps plot access log locations on maps, showing scan concentration by region for multi-location campaigns. Landing page heatmaps show where users tap, scroll, and drop off - cold CTA buttons signal design improvements needed, cold page bottoms suggest content reordering.