Why do certain bitmapped pictures produce a black rectangle in the PDF, while looking fine on the screen?
A. Although a picture appears to be a simple color bitmap (pixmap), its internal structure may be more complicated. I’ve seen a few pictures that make an image by overlaying two bitmapped images in a certain way. I’m not sure what program created them, because they’ve been pictures that people have had sitting around for years. It’s unlikely that I can make PrintToPDF handle such a picture well. But there’s a simple way to “normalize” it: Paste it into a bitmap editing program, such as an AppleWorks “paint” window. Then copy it back out.
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