What is the smallest fragment that makes up an image called?

The smallest fragment that makes up an image is called a pixel. A pixel, short for "picture element," is the most basic unit of a digital image or display. It represents a single point in a graphic, and when combined with numerous other pixels, it creates the complete image that we see on screens.

Understanding pixels is fundamental in digital imaging and graphic design because they lay the groundwork for how images are rendered and displayed. Each pixel typically carries information regarding its color and intensity, allowing for a wide range of visual representation depending on the density and arrangement of these elements in a given image.

Other options, while related to computing and data, do not refer specifically to the components of an image. A byte is a unit of digital information that consists of eight bits, typically representing a character. A voxel is a term used in 3D imaging, representing a value on a regular grid in three-dimensional space, and a bit is the most basic unit of data in computing, representing a binary value of 0 or 1. These terms are important in their contexts but do not define the smallest unit of a 2D image as accurately as a pixel does.