MobileRead Forums - View Single Post - k2pdfopt: optimizes PDFs for viewing on e-readers

willus · 01-25-2021, 10:39 PM

You cannot quite do this operation with only k2pdfopt since it cannot rotate specific pages. You'll also need a utility like qpdf which can merge two pdfs together. If you have qpdf, here would be the commands to run:

Code:

k2pdfopt -grid 1x2x0 -mode crop booklet.pdf -o split.pdf
k2pdfopt -p 2-e split.pdf -mode copy -n -o booklet1.pdf
k2pdfopt -p 999-1o split.pdf -mode copy -n -rt 180 -o booklet2.pdf
qpdf --pages booklet1.pdf booklet2.pdf -- --empty booklet_final.pdf

The first command splits each page into two. The second command copies only the even pages to a new file. The third command copies only the odd pages into a different new file in reverse order and rotates them. The final (qpdf) command joins the results from the previous two commands.

01-25-2021, 10:39 PM	#1839
willus Fuzzball, the purple cat Posts: 1,303 Karma: 11087488 Join Date: Jun 2011 Location: California Device: iPad	You cannot quite do this operation with only k2pdfopt since it cannot rotate specific pages. You'll also need a utility like qpdf which can merge two pdfs together. If you have qpdf, here would be the commands to run: Code: k2pdfopt -grid 1x2x0 -mode crop booklet.pdf -o split.pdf k2pdfopt -p 2-e split.pdf -mode copy -n -o booklet1.pdf k2pdfopt -p 999-1o split.pdf -mode copy -n -rt 180 -o booklet2.pdf qpdf --pages booklet1.pdf booklet2.pdf -- --empty booklet_final.pdf The first command splits each page into two. The second command copies only the even pages to a new file. The third command copies only the odd pages into a different new file in reverse order and rotates them. The final (qpdf) command joins the results from the previous two commands. Last edited by willus; 01-25-2021 at 10:41 PM.