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Examine PDF meta data

A few useful commands:

  • mdls my.pdf Printss PDF meta data. (Installed by default in MacOS)
  • pdfinfo my.pdf Prints PDF meta data. Install with brew install xpdf
  • pdfimages -list my.pdf 0 Prints dimension details including DPI. brew install poppler
  • identify -verbose my.pdf Prints long, detailed list of information. Comes with imagemagick.

Python script to tell the dimensions of a PDF when printed with default size meta data.

# pip install pypdf2
# Usage: pdfsize.py

import PyPDF2
import sys
pdf = PyPDF2.PdfFileReader(sys.argv[1], "rb")
p = pdf.getPage(0)

w_in_user_space_units = p.mediaBox.getWidth()
h_in_user_space_units = p.mediaBox.getHeight()

# 1 user space unit is 1/72 inch
# 1/72 inch ~ 0.352 millimeters

w = float(p.mediaBox.getWidth()) * 0.352
h = float(p.mediaBox.getHeight()) * 0.352

print 'PDF dimensions are %smm x %smm' % (w, h)