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On 02/22/2017 03:12 PM, karl@××××××××.se wrote: |
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> Thelma: |
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>> I have scaned pdf file (88-page) 23MB in size (downloaded this way). |
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>> Trying to reduce the size of the file I [...] |
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> |
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> Why don't you extract the images with pdfimages from the pdf and |
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> compress them with xv or convert (imagemagic) and maybe gimp can |
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> comress them also. Don't know how to get them back into a pdf though. |
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> |
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> Regards, |
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> /Karl Hammar |
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> |
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> ----------------------------------------------------------------------- |
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> Aspö Data |
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> Lilla Aspö 148 |
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> S-742 94 Östhammar |
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> Sweden |
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> +46 173 140 57 |
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I'm puzzled as to what program they used to compress the PDF file with such a good quality output (PDF format as well). |
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This is the link I use to compress the file: |
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https://online2pdf.com/pdf-reduce-size |
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I've tried: |
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gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dDownsampleColorImages=true -dColorImageResolution=150 -dNOPAUSE -dBATCH -sOutputFile=5.pdf COVERAGE_July-1-2016.pdf |
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gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=5.pdf COVERAGE_July-1-2016.pdf |
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convert -density 200x200 -quality 60 -compress jpeg COVERAGE_July-1-2016.pdf 5.pdf |
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gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=5.pdf COVERAGE_July-1-2016.pdf |
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The last one above gave me decent size I think about 5MB but the quality wasn't very good. |
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All others, size was hardly reduced or quality was terrible. |
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Gimp will open only one page at at time, so it is not suitable for this conversion. |
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Thelma |
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