Image formats: Pixel data from encoders to decoders

Image formats: Pixel data from encoders to decoders Polina Gurtovaia August 4, 2025 18 minutes read In the previous post , we focused on how images are seen by people and shown on devices.

Qué encontrarás en la fuente

• Now it’s time to zoom in and explore the tiny building blocks of an image — the pixels and the bytes behind them.
• To display an image, a device needs to get information about the colors of different parts of the image from a data source.
• For a device, most images are just grids, and each cell in that grid is a pixel.
• A pixel is an ephemeral value; it doesn’t have a size or shape.
• It’s up to the hardware and software to decide how to represent these pixels.

Resumen

There are an infinite number of ways to store pixel data, so devices need to understand the image format, that is, the way that data is organized.

Fuente: MDN