Most image capture devices (such as digital cameras) that output JPG creates files in the Exif format, the camera industry standardized for metadata interchange. Image files that employ JPG compression are commonly called "JPG files" and are stored in variants of the JIF image format. It was developed by a Russian software engineer, Eugene Roshal, and the RAR software is licensed by win.rar GmbH. RAR is a proprietary archive file format that supports data compression, error recovery, and file spanning. JPG typically achieves 10:1 compression with little perceptible loss in image quality. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPG is a commonly used method of lossy compression for digital images, particularly those produced by digital photography.
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