Raster Images

Raster images, also known as bitmap images, are digital images composed of a grid of pixels, where each pixel contains color information. They are resolution-dependent, meaning quality degrades when scaled up, and are commonly used for photographs and complex graphics. Formats like JPEG, PNG, and GIF are examples of raster image files.

Also known as: Bitmap Images, Pixel-Based Images, Raster Graphics, Raster Files, JPEG/PNG Images

Why learn Raster Images?

Developers should learn about raster images when working with web development, graphic design, or image processing, as they are essential for displaying photos, icons, and detailed visuals in applications. Understanding raster formats helps optimize file sizes, ensure compatibility across devices, and handle image manipulation tasks such as cropping or filtering.

Learning Resources

• docs: MDN Web Docs: Raster Graphics
• tutorial: W3Schools: Image Formats
• video: Khan Academy: Raster vs Vector
• docs: Adobe: Raster Image Basics