qpdf

Versatile PDF transformation software. More information: https://github.com/qpdf/qpdf.

• Extract pages 1-3, 5 and 6-10 from a PDF file and save them as another one:
  qpdf --empty --pages {{input.pdf}} {{1-3,5,6-10}} -- {{output.pdf}}
• Merge (concatenate) all the pages of a list of PDF files and save the result as a new PDF:
  qpdf --empty --pages {{file1.pdf}} {{file2.pdf}} {{file3.pdf}} -- {{output.pdf}}
• Merge (concatenate) given pages from a list of PDF files and save the result as a new PDF:
  qpdf --empty --pages {{file1.pdf}} {{1,6-8}} {{file2.pdf}} {{3,4,5}} -- {{output.pdf}}
• Write each group of n pages to a separate output file with a given filename pattern:
  qpdf --split-pages=n {{input.pdf}} {{out_%d.pdf}}
• Rotate certain pages of a PDF with a given angle:
  qpdf --rotate={{90:2,4,6}} --rotate={{180:7-8}} {{input.pdf}} {{output.pdf}}
• Remove the password from a password-protected file:
  qpdf --password={{password}} --decrypt {{input.pdf}} {{output.pdf}}