Vector Graphics

Vector graphics describe images using coordinates, lines, and Bezier curves rather than pixel grids. Common formats include SVG, EPS, and PDF. The defining advantage is infinite scalability - edges remain sharp at any size, making vectors the standard for logos, icons, maps, and QR code output.

For QR codes, the choice between vector and raster directly affects print quality. A PNG generated at business-card size will blur when scaled to a poster, potentially causing scan failures. An SVG or PDF version of the same code renders crisply at any dimension because the renderer recalculates every line from its mathematical definition.

The practical rule is straightforward: PNG suffices for screen display, but print applications demand vector output. Large-format printing - billboards, banners, vehicle wraps - simply cannot achieve the required sharpness with raster images. For design QR codes with embedded logos, vector formats also streamline the design workflow since repeated scaling never degrades quality.