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This is the right format for those photo images which must be very small files; for example, for web sites or for email. The JPG file is wonderfully small, often compressed to perhaps only 1/10 of the size of the original data.

However, this fantastic compression efficiency comes with a high price. JPG uses lossy compression (lossy meaning "with losses to quality") .Lossy means that some image quality is lost when the JPG data is compressed and saved, and this quality can never be recovered.

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