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by Graham Williams
Duck Duck Go

Cropping a PDF

20180528 There are times and circumstances where it is useful to crop a pdf document. For example, when producing the pdf for my book titled The Essentials of Data Science I placed crop marks in each of the four corners. From this original version I wanted to extract just the printable page. Through experimentation I found that introducing a margin of $-50$ did the trick.

  $ pdfcrop --margins -50 input.pdf output.pdf
  $ evince output.pdf

The original and result can be seen in Figure 79.1. The original is at the top of the figure and the cropped version, using pdfcrop with -margins 50, is at the bottom. When printing, the image will generally be expanded to fit the page, though that is often a setting within the application controlling the printing.

Figure 79.1: The effect of cropping the margins of a pdf document.
Image pdfcrop-essentials

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Also the author of Data Mining with Rattle and Essentials of Data Science.