JPEG
Short for Joint Photographic Experts Group. The most popular method of image compression that’s great for continuous tone photographs.
It supports CMYK, RGB and grayscale. It’s a lossy compression method so information is discarded to save disk space, but when saved at a minimal compression level the image can be indistinguishable from the original.
The JPEG Options palette has a slider to adjust the compression level from 0 low quality/high compression to 10 high quality/low compression. Set 10+ for best printed results and around 6 for Web use, avoid lower settings where ...
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