Using "sips" to change resolution of PDF file

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LEARN ABOUT ULTRIX

pdfimages

pdfimages(1)						      General Commands Manual						      pdfimages(1)

NAME

       pdfimages - Portable Document Format (PDF) image extractor (version 3.00)

SYNOPSIS

       pdfimages [options] PDF-file image-root

DESCRIPTION

       Pdfimages saves images from a Portable Document Format (PDF) file as Portable Pixmap (PPM), Portable Bitmap (PBM), or JPEG files.

       Pdfimages  reads  the PDF file PDF-file, scans one or more pages, and writes one PPM, PBM, or JPEG file for each image, image-root-nnn.xxx,
       where nnn is the image number and xxx is the image type (.ppm, .pbm, .jpg).

OPTIONS

       -f number
	      Specifies the first page to scan.

       -l number
	      Specifies the last page to scan.

       -j     Normally, all images are written as PBM (for monochrome images) or PPM (for non-monochrome images) files.  With this option,  images
	      in DCT format are saved as JPEG files.  All non-DCT images are saved in PBM/PPM format as usual.

       -opw password
	      Specify the owner password for the PDF file.  Providing this will bypass all security restrictions.

       -upw password
	      Specify the user password for the PDF file.

       -p     Include page numbers in output file names.

       -q     Don't print any messages or errors.

       -v     Print copyright and version information.

       -h     Print usage information.	(-help and --help are equivalent.)

EXIT CODES

       The Xpdf tools use the following exit codes:

       0      No error.

       1      Error opening a PDF file.

       2      Error opening an output file.

       3      Error related to PDF permissions.

       99     Other error.

AUTHOR

       The pdfimages software and documentation are copyright 1998-2004 Glyph & Cog, LLC.

SEE ALSO

       pdffonts(1), pdfinfo(1), pdftocairo(1), pdftohtml(1), pdftoppm(1), pdftops(1), pdftotext(1)

								  22 January 2004						      pdfimages(1)

UNIX for Advanced & Expert Users