What is the primary purpose of a vector file format?

The primary purpose of a vector file format is to maintain high quality at any size. Vector graphics are composed of paths defined by mathematical equations, which means they can be scaled up or down without loss of quality. This scalability makes vector formats ideal for logos, icons, and illustrations, where maintaining sharp lines and detail across different resolutions is crucial. Unlike raster images, which can become pixelated when enlarged, vector files retain their clarity regardless of size changes, making them versatile for various applications in graphic design. This characteristic is particularly important for designs that need to be printed in different formats or displayed on screens of varying sizes.