Joint Photographic Experts Group (JPEG)
JPEG, also known as Joint Photographic Experts Group, refers to a way of storing graphic image files. JPEG files work by using lossy compression that calls for some of the file information to be deleted in order to save memory space. Since 1986, the International Standard Organization has been setting the standards for JPEG formatting.
Because part of the original information is eliminated, images saved as JPEG files will not appear exactly the same as the originals. Although JPEG images can be either black and white or a variety of colors, certain subjects are more suited to this method of file storage.
Natural images with softer edges, rather than text or sharply-edged images, tend to work better as JPEG files.
Pictures saved in this manner will have one of the following file extensions: .jpeg, .jfif, .jpg, .JPG or .JPE. Most graphics stored to sent through the internet are formatted as JPEGs.
Alternatives to JPEG storage include GIF and PNG files both of which use lossless compression. Both GIF and PNG files preserve all of the information contained in the original digital image, allowing them to produce an exact copy of it. However, the downside to these alternatives is that they demand more computer memory. The type of file storage method you choose will depend on the quality and integrity you will ultimately need for your prints.
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