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What is a “baseline” JPEG?

“JPEG” is an acronym for the Joint Photographic Experts Group. In computing, JPEG/JPG (pronounced jay-peg) is a commonly used method of compression for photographic images. A baseline JPEG is a file stored as one top-to-bottom scan of an image, unlike the more complex progressive JPEG. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality. JPEG compression is used in many image file formats. JPEG is the most common image format used by digital cameras and other photographic image capture devices. A baseline JPEG is recommended for all Artograph digital Art Projectors.