A Vector image, unlike a Raster, uses mathematical algorithms to store picture information. The information stored here is position of dots, lines, curves and polygons along with color information for the fill and outline of each part of the image. Since information about every minuscule part of the image is not stored, the file size is much lower compared to a Raster one. Refer to image 1 to note the differences. Vectors are not resolution dependent, which makes it flexible in a sense where one can scale the image up or down to any degree without affecting the picture quality. The image stays sharp, clear and intact at any size. Source
Can be printed for displays, wall hangings, for birthday presents.