Use Ghostscript ( gs) to compress input.pdf into output.pdf 2020), and there's no need to override those values. Note that I've removed the -dCompatibilityLevel=1.4 part of the command used in some other answers here (including the most-upvoted answer) because this table indicates that 1.5 or 1.7 are automatically used for this setting today (27 Dec. Referencing this answer and this answer, and after trying a bunch of the answers here, and doing a bunch of research and experimenting, I've come up with the following. Depending on the document source, you might want to reduce the color depth ( -depth argument).įor my other, pdfsizeopt-based answer, see here. I was able to achieve great compression ratios for scanned/photographed documents (depending on the settings).
COMPRESS PDF TO SMALL SIZE ZIP
You have the choice between BZip, Fax, Group4, JPEG, JPEG2000, Lossless, LZW, RLE or Zip as alternate compression methods (some only allow b/w images). jpeg compression might not be the best choice due to compression artifacts. For jpg it is between 1 to 100 with 100 the best quality, but lowest compression Higher pixel densities increase quality and size -density: the pixel density in dpi (e.g.If you have a pdf with scanned images, you can use convert (ImageMagick) to create a pdf with jpeg compression (You can use this method on any pdf, but you'll loose all text informations).įor example: convert -density 200x200 -quality 60 -compress jpeg input.pdf output.pdf
The exact settings for each of these, including their DPI values, are shown in the dozens of options in this table. /default selects output intended to be useful across a wide variety of uses, possibly at the expense of a larger output file./prepress selects output similar to Acrobat Distiller "Prepress Optimized" (up to version X) setting./printer selects output similar to the Acrobat Distiller "Print Optimized" (up to version X) setting./ebook selects medium-resolution output similar to the Acrobat Distiller (up to version X) "eBook" setting./screen selects low-resolution output similar to the Acrobat Distiller (up to version X) "Screen Optimized" setting.Presets the "distiller parameters" to one of four predefined settings: Reference: : Controls and features specific to PostScript and PDF input -dPDFSETTINGS=/default selects output intended to be useful across a wide variety of uses, possibly at the expense of a larger output file.-dPDFSETTINGS=/printer selects output similar to the Acrobat Distiller "Print Optimized" setting ( 300 dpi).-dPDFSETTINGS=/prepress output similar to Acrobat Distiller "Prepress Optimized" setting ( 300 dpi).-dPDFSETTINGS=/ebook for better quality, but slightly larger pdfs.-dPDFSETTINGS=/screen lower quality, smaller size.dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf Use the following ghostscript command: gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook \
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