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 path/to/input.pdf 1-3,5,6-10 -- path/to/output.pdf

• Merge (concatenate) all the pages of multiple PDF files and save the result as a new PDF:

qpdf --empty --pages path/to/file1.pdf file2.pdf … -- path/to/output.pdf

• Merge (concatenate) given pages from a list of PDF files and save the result as a new PDF:

qpdf --empty --pages path/to/file1.pdf 1,6-8 path/to/file2.pdf 3,4,5 -- path/to/output.pdf

• Write each group of n pages to a separate output file with a given filename pattern:

qpdf --split-pages=n path/to/input.pdf path/to/out_%d.pdf

• Rotate certain pages of a PDF with a given angle:

qpdf --rotate=90:2,4,6 --rotate=180:7-8 path/to/input.pdf path/to/output.pdf

• Remove the password from a password-protected file:

qpdf --password=password --decrypt path/to/input.pdf path/to/output.pdf