File extensions: .jpeg, .png Raster images, with the above extensions, are normally photos or scanned images. These images allow more colour detail than Vector images and are made up of tiny blocks called “pixels”. However, pixels are not able to be adjusted or modified like a vector image can be. When Raster images are enlarged, they become blurry and pixilated. For certain branding methods, this will affect the quality and outcome of the printing.