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(1) Choose export options that down sample images to lower resolutions. For example, the predefined print-oriented export options (i.e. .job options) down sample images to 300 dpi for images over 450 dpi. This is perfectly fine for PDF files being printed on high quality devices or that may be viewed on large 4K ultra high definition monitors. However, for less critical printing and/or viewing on lower resolution monitors, 150 dpi to 200 dpi may be adequate and could dramatically cut PDF file size.
(2) Choose export options that use lossier compression for raster images. Typically, the predefined export options use Automatic (JPEG) Maximum quality compression. Changing the Image Quality from Maximum to High or even Medium may yield acceptable results, but you should experiment.
(3) Combination of (1) and (2) above.
(4) Make sure to check the Compress Text and Line Art option. This option is non-lossy and can achieve significant compression for content that is not raster image-based.
(5) Check the Crop Image Data to Frames option. This option only includes the part of any images used by your InDesign document that actually are visible on output due to cropping within a frame. Note that this option can backfire on you if you repeat the same image multiple times in your document with different cropping. |
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换窗过程回放 － 系列组图 (2005-7-18) leeshine 
发表于 2023-12-10 19:56
