A vector image is a type of image defined on a plane, connected by lines and curves. They form shapes based on mathematical equations, and because of this, if you zoom in or out, the lines, curves, or points always remain smooth. Vector images are made from mathematical paths, while raster images are made up of a bunch of tiny pixels. Vector graphics are used by artists who are creating illustrations, logos, and other designs that are going to be printed on big surfaces. This is why a lot of designers prefer to convert their images to vector before printing them out. Sticker Mule offers a service called Redraw that can convert any image into a high-resolution vector format for a flat rate of $19.