Probably the majority of these would use Canvas2D for a mix of: fingerprinting, tracking/ad tech, feature detection, font metrics, CPU rasterization & pixel man

Probably the majority of these would use Canvas2D for a mix of: fingerprinting, tracking/ad tech, feature detection, font metrics, CPU rasterization & pixel manipulation. Occasionally it will be used for specific elements, games, artworks, animations, font rendering, video effects, image resizing, and sometimes entire applications (Figma, Google Docs, Google Maps, although they likely all use WebGL Canvas for performance & control).