All images from digital cameras or scanners are made up of PIXELS. The word PIXEL is a contraction of the term PIcture ELement. A pixel’s appearance can be defined as a tiny square of colour. You may find it helpful to think of it as a very small tile, such as a floor tile. If you magnified a high resolution digital image to 1,600 percent you would see the pixels (or tiles) that the image is made up of.