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Pixel: Simple Definition

A pixel (picture element) is the smallest individual point in a digital image. Every digital photo, video frame, and screen display is made up of millions of tiny colored pixels arranged in a grid.

Each pixel stores color information as RGB values - red, green, and blue values from 0-255 that combine to create any color in the spectrum. Your smartphone screen has millions of pixels packed so tightly together they appear as one smooth image.

How Pixels Work

When you take a 12-megapixel photo, your camera captures 12 million individual pixels. Each pixel records the exact color and brightness at that point in the scene. Zoom in far enough on any photo and you will see the individual colored squares.

The concept of pixels is important for image editing because it determines image quality limits. You cannot add detail by enlarging a low-resolution image - you just make the existing pixels bigger, creating a blurry, “pixelated” result.

Examples of Pixel