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29 lines
1.5 KiB
Text
29 lines
1.5 KiB
Text
This program is able to extract page mode and named destinations as
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PDF marks from PDF. By using this you can get small PDF files that have
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preserved them.
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When you create a PDF document using a TeX system, you may include many
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small PDF files in the main PDF file. It is common for each of the
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small PDF files to use the same fonts.
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If the small PDF files contain embedded font subsets, the TeX system
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includes them as-is in the main PDF. As a result, several subsets of
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the same font are embedded in the main PDF. It is not possible to
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remove the duplicates since they are different subsets. This vastly
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increases the size of the main PDF file.
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On the other hand, if the small PDF files contain embedded full font
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sets, the TeX system also includes all of them in the main PDF. This
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time, the main PDF contains duplicates of the same full sets of fonts.
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Therefore, Ghostscript can remove the duplicates. This may considerably
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reduce the main PDF file's size.
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Finally, if the small PDF files contain some fonts that are not
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embedded, the TeX system outputs the main PDF file with some fonts
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missing. In this case, Ghostscript can embed the necessary fonts,
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significantly reducing the required disk space.
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Either way, when Ghostscript reads the main PDF produced by the TeX
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system and outputs the final PDF it does not preserve PDF page mode,
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named destinations, etc. As a result, when you open the final PDF, it
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is not displayed correctly. Also, remote PDF links will not work.
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