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gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/prepress -dNOPAUSE -dQUIET -dBATCH -sOutputFile=compressed_PDF_file.pdf input_PDF_file.pdf
dPDFSETTINGS | Description |
---|---|
/prepress (default) | Higher quality output (300 dpi) but bigger size |
/ebook | Medium quality output (150 dpi) with moderate output file size |
/screen | Lower quality output (72 dpi) but smallest possible output file size |