I have got two pdf files with same number of pages and want compare each page with the corresponding page in the other file. For this I would like to merge say page 1 of File1.pdf with page 1 of File2.pdf so it gets one page in the new document. Then page 2 of File1.pdf with page 2 of File2.pdf and make it page 2 of the new file.
In this question I learned already that I can put two pages on one page with the
--nup option of the
pdfjam File1.pdf File2.pdf --nup 2x1 --landscape --outfile File1+2.pdf
The same can be achieved with the
montage *.pdf merged.pdf
But this puts together page 1 and page 2 of the first file and does the same later on with the second file – not as intended.
What I did is to split the two documents. The first file got even numbers in the file name, the second odd numbers (actually I created the files anew with appropriate file names). Then I merged all files again with
pdftk *.pdf cat output merged.pdf
and finally put two pages on one with
pdfjam --nup 2x1 --landscape --outfile merged2up.pdf merged.pdf
I could write a script with a loop doing this, but I was wondering whether there is an easy one-liner to achieve this? Maybe I didn't find the right pdfjam, pdftk or ImageMagick command?