It may sometimes be helpful to be able to quickly split a single PDF, and we can do this by selecting and saving specific portions of a larger PDF. We can use Ghostscript.
gs -dBATCH -dNOPAUSE -q -dPDFSETTINGS=/prepress -sOutputFile=extracted.pdf -dFirstPage=1 -dLastPage=2 -sDEVICE=pdfwrite <input_file.pdf>We also take advantage of the dPDFSETTINGS=/prepress optimization which significantly reduces the size of the output file.
The first page in the document is 1, not 0.