Converting a PDF to one with multiple pages per sheet through the command line

You can also use pdfnup:

pdfnup --nup 2x2 --no-landscape file.pdf

where 2x2 refers to 2 rows by 2 columns (or the reverse--I'm not sure). See man pdfnup for more options.

to perform an IMPOSITION, nothing is better than Multivalent.jar (latest free version with tools inside, latest Multivalent build currently hosted on sourceforge - 2009 - has no more pdf tools)

you can download the Multivalent.jar build with tools from:

• http://www.ziddu.com/download/1794145/Multivalent.tar.gz.html
• http://ge.tt/#!/21OPDHX/v/4
• http://dingodog.minus.com/mjhNX8Eiu

online man - http://multivalent.sourceforge.net/Tools/pdf/Impose.html

use:

java -cp path...to/Multivalent.jar tool.pdf.Impose -dim (rowsxcols) -paper (paper sizes where pages will be imposed) file.pdf