A pixel, short for "picture element," is the smallest individual unit of a digital image. Each pixel represents a specific colour and, when combined with thousands or millions of other pixels, forms a complete image that appears continuous to the human eye.
Pixels are fundamental to digital photography, computer graphics, and display technology. The number, size, and density of pixels determine an images resolution, detail, and clarity. Understanding pixels is essential for image editing, printing, and display, as they directly influence sharpness, colour accuracy, and overall visual quality.