CODEWITHSUNDEEP
pdfprintingresizeghostscript
DimmuBoy
DimmuBoy

Reputation: 103

Change size PDF unproportionally by Ghostscript

I have PDF document with many pages 595x420 ppi but I need this pages push in 595x210 but all text must be visible.

So.. Can I change scale of PDF pages unproportionally (no zoom) to fit custom size of page with ghostscript or I must to use some another program?

Upvotes: 0

Views: 327

Answers (1)

KenS
KenS

Reputation: 31139

If you want scaling applied to one axis and not the other, then you will have to do some PostScript programming. In /ghostpdl/Resource/Init/pdf_main.ps is the code which calculates the matrix required:

/pdf_PDF2PS_matrix {    % <pdfpagedict> -- matrix
  matrix currentmatrix matrix setmatrix exch
  % stack: savedCTM <pdfpagedict>
  dup get_any_box
  % stack: savedCTM <pdfpagedict> /Trim|Crop|Art|MediaBox <Trim|Crop|Art|Media Box>
  oforce_elems normrect_elems fix_empty_rect_elems 4 array astore
  //systemdict /PDFFitPage known {
    PDFDEBUG { (Fiting PDF to imageable area of the page.) = flush } if

That code calculates the x and y scale values and makes them the same. If you want them to differ, that's what you will have to modify. Note you will also have to set a specific media size using -dDEVICEHEIGHTPOINTS and -dDEVICEWIDTHPOINTS and set -dFIXEDMEDIA to prevent the PDF file resizing the media.

Upvotes: 2

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