How to get PDF page dimensions in MM from CLI

how_to_get_pdf_dimensions_on_cli.md

How to get PDF page dimensions in MM

Using pdfinfo

apt install poppler-utils

Then, use the following command:

pdfinfo test.pdf | grep "Page size" | grep -Eo '[-+]?[0-9]*\.?[0-9]+' | awk -v x=0.3528 '{print $1*x}'

Using ImageMagick

apt install imagemagick

nano /etc/ImageMagick-6/policy.xml

Add <policy domain="coder" rights="read | write" pattern="PDF" /> to end of <policymap> element (comment out existing PDF line).

Finally, use the following command:

identify -verbose test.pdf  | grep "Print size" | grep -Eo '[-+]?[0-9]*\.?[0-9]+' | awk -v x=25.4 '{print $1*x}'

Acknowledgements

• https://stackoverflow.com/questions/9622357/php-get-height-and-width-in-pdf-file-proprieties
• https://unix.stackexchange.com/questions/39464/how-to-query-pdf-page-size-from-the-command-line
• https://stackoverflow.com/questions/52998331/imagemagick-security-policy-pdf-blocking-conversion