http://www.jpeg.org/ is the official home for JPEG, a graphical
file format that incorporates lossy still image compression.

The [Img] package supports this format.

The [GWImage] widget supports this format.
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The name comes from the name of the group that developed the format: the Joint Photographic Experts Group.  It is extremely well suited to compression of real-world images, though if you intend to do substantial manipulation you are better off using a non-lossy compression scheme instead (such as is found in the [TIFF] format with the right options.)

Greyscale images are compressible (AIUI) in a lossless fashion as JPEG images; I think this is using a different algorithm and you might need to select the correct algorithm when doing the compression (though some utilities will scan the image first to see if this is possible.)
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[Category Acronym] |
[Category Graphics]
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