If you think of an image as a two-dimensional array of pixels (e.g., 100 pixels wide and 100 pixels tall), then a raster image will save the color of each of those 10,000 pixels (e.g., the position should be pink, the position should be green). Memes you see online are raster images, and so are almost all of the images that you see on websites and mobile apps.Ī raster image is simply an image that stores data as a collection of pixel colors. Any smartphone or digital camera that takes a photo saves it as a raster image, such as a. Raster images are likely the types of images that you have had most exposure to. More compatible than other hybrids (at least for viewing) This chapter will briefly explain the differences between these file types, their benefits and limitations, and when to use each.Ĭommon File Extension Formats with Notes File Extension In addition, hybrid file types also exist that allow designers to combine raster and vector graphics together. Raster images rely on a grid of pixels to represent images, while vectors rely upon mathematical equations connecting points on a geographic plane.
Though the differences between these formats may not make much sense on the surface, some basic understanding of how image files are saved and processed will help you to understand how to use these file extensions to your advantage.įor starters, there are two basic categories of image file types: raster and vector (see Table 1). If you have done any work with images or graphic design programs, you may have noticed that they use a variety of file extensions representing different file formats, such as. "Incomprehensible jargon is the hallmark of a profession."
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