Raster images are the most common type of image format. These images files are also known as bitmap images (such as photos) that contain a grid of pixels, where each individual pixel is assigned a color. As these raster images have a pre-defined resolution, resizing them can often result in a visible loss of quality. Raster images are commonly used on web pages and digital photos and often use some form of compression to reduce their file size.
Vector images have their image data stored as geometrical points, meaning they can be resized without losing image quality.
The following listing also contains file formats associated with image editing and desktop publishing applications.