-sDEVICE parameter can be set to the following values:

-sDEVICE=tiff12nc

Produces 12-bit RGB output

-sDEVICE=tiff24nc

Produces 24-bit RGB output

-sDEVICE=tiff48nc

Produces 48-bit RGB output

-sDEVICE=tiff32nc

Produces 32-bit CMYK output

-sDEVICE=tiff64nc

Produces 64-bit CMYK output

-sDEVICE=tiffscaled24 -sCompression=lzw

Produces a 24 bit RGB image and allows the use of a special compression tag along with it which allows us to compress the size of the image.

-sDEVICE=tifflzw

Produces black-and-white output and can be combined with various compression options.

Following are the results of images produced by splitting a PDF with the given specifications under different GhostScript parameters:

PDF Size: 514Kb Number of pages in PDF: 26 Note: PDF contained mixture of colored and B/W images

Ghostscript-stats

So in case the user wants to retain the color of the images, please use -sDEVICE=tiffscaled24 -sCompression=lzw value and in case of when no colored images are present or the color is not of much importance to user, the user can go for -sDEVICE=tifflzw option. NOTE: These options are available only GhostScript 9.04 onwards. Please make sure the user has the required version. Although Version available with Ephesoft 3.0 onwards installer is 9.05.

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Walter Lee