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Can it be done that the same image is used both in the electronic
publication and the paper edition ? Do I have to keep two different files of
the same image, each having its own link depending on its designed ouput ?
Do I have to keep only the good-quality image and batch-process the
resolution change during the publication ?
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I'd suggest keeping one high-res copy of each image in your docs set,
and batch convetting them to a smaller res as required for the html versions
of your docs as part of your build process (as you suggest).
A lot of people seem to get hung up on DPI, which as you point out is
meaningless when you don't know the number of pixels per inch on
the display device. It's probably better to simply think about the
resolution
of the image in terms of pixels, and always choose a power of two
resolution; then you can scale down to half size or quarter size without
introducing aliasing artifacts (so, 1024*1024 for printed docs and
256*256 for the on-line version, or something like that). This will avoid
the fuzziness that screen shots seem to increasingly have (especially
for some reason in professionally published books on XML, which
presumably have been written using XML).
hth,
Chris.
Christopher Gooch, Technical Author
LightWork Design, Sheffield, UK.
www.lightworkdesign.com
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