gs

GhostScript is a PDF and PostScript interpreter.

• To view a file:

gs -dQUIET -dBATCH {{file.pdf}}

• Reduce PDF file size to 150 dpi images for reading on a ebook device:

gs -dNOPAUSE -dQUIET -dBATCH -sDEVICE=pdfwrite -dPDFSETTINGS=/ebook -sOutputFile={{output.pdf}} {{input.pdf}}

• Convert PDF file (pages 1 through 3) to an image with 150 dpi resolution:

gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=jpeg -r150 -dFirstPage={{1}} -dLastPage={{3}} -sOutputFile={{output_%d.jpg}} {{input.pdf}}

• Extract pages from a PDF file:

gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input.pdf}}

• Merge PDF files:

gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input1.pdf}} {{input2.pdf}}

• Convert from PostScript file to PDF file:

gs -dQUIET -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile={{output.pdf}} {{input.ps}}