OT: Cutting in two halves each page of a pdf document

[Paul Smith]

On 6/24/07, Frank Cox <theatre at sasktel.net> wrote:
> > Is there some way of cutting in two halves each page of a pdf document
> > (in landscape) and getting a single pdf document with each one of
> > those halves being a page?
>
> Just off of the top of my head, I would be inclined to rip the PDF down into
> individual pages with pdftk and then use Imagemagick to grab the left side of
> each page, then the right side, and so on.  Re-assemble the PDF at the end with
> pdftk once more, and that should do it.
>
> This is the first time I have seen anyone ask about how to de-impose a PDF, but
> I don't see why that won't work.

Thanks, Karl and Frank. I am looking for an automatic method, as my
pdf document has got more than 100 pages!

Paul