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Chapter 9. Pictures > Enlarge or shrink?

Enlarge or shrink?

Scaling a bitmap picture in QuarkXPress affects its output resolution. If you shrink a bitmap picture in QuarkXPress, its output resolution will increase; if you enlarge a bitmap picture, its output resolution will decrease. Here's an example: Take a 150 ppi image and shrink it by half. Its ppi will increase to 300. Why should you bother paying attention to this? Because enlarg-ing a bitmapped picture above 100% in Quark XPress will diminish its print quality. A vector-based image (e.g., an Adobe Illustrator EPS) won't degrade in quality if it's enlarged in QuarkXPress, but it may take longer to print. You can also take a large picture and shrink it down in a QuarkXPress layout, but the picture will add significantly to the project's file size and also prolong its print time. So the moral of the story is...plan ahead.


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