What’s the difference between raster and vector?
A raster image is made up of pixels, each a different color, arranged to display an image. A vector image is made up of paths, each with a mathematical formula (vector) that tells the path how it is shaped and what color it is bordered with or filled by.
Pros and cons of rasters and vectors
Raster images cannot be made larger without sacrificing quality. Vector images cannot display the natural qualities of photographs. Vector images are scalable, so that the same image can be designed once and resized infinitely for any size application – from a business card to billboard.
Adobe Photoshop is a raster editing program where in Adobe Illustrator you create vector graphics.