Try BRISS. In fact, I pesonally like it better, since it doesn't rasterize everything, and is platform neutral. It isn't specifically tailored for multiple columns, but since you can hand-define as many crop regions as you want, it does the same thing.
Hi,

That's great. At first I thought the tool wasn't working, when I saw all the similar pages blurred together. Then I realised it was saving me a heck of a lot of time.

I couldn't ask for anything more than this tool. Thanks for the pointer!

Kit
Hi Taesoo Kwon,
I downloaded the tools and ran this on one of the technical paper with 2 columns.
While running a process all pages, I chose ( portrait) vertical scroll (outputs a single image if not too big).
But it was taking the crop numbers not in sequence. For the first page it was fine. But from second page it took the left column to be the first crop and col1 as the 2 crop. Can u please help me resolving this .

Thanks
VJ
Having just tried PaperCrop 0.43, I found I was getting the same error (lua error config.lua:104: attempt to compare nil with number) as per Issue 6 on your web page.

Unlike the raiser(s) I encountered the problem with Windows XP.

You might be interested to know that the problem only occured when the "Process current page" button was pressed, it did not happen when the "Process all pages" button was used.

--

This in turn raises a different issue - when a pdf contains different page orientations / margins (in my case a landscape cover page followed by portrait contents) is there any way to process a range of pages with one set of parameters then another range with other parameters.

Even if single page processing was working, I could not face processing 159 pages one at a time.
I will add this functionality in the next version.
By the way, it is difficult for me to answer questions here.
Please use the issue tracker on the google papercrop project page.
Thank you.

Taesoo.
good idea,
but does it work in apple too?
Try Willus.com's K2pdfopt
Hello, I am the programmer of papercrop. This thread is too old and I no longer regulary visit this thread. If you have any problems or questions about papercrop, please use the issue tracker in the code.google.com/p/papercrop page instead. Thank you.

Taesoo.
Ya i have the same problem of no output. except when i press process current page.
calibre already has all the ereader screen dimensions. just chose your ereader and it'll tell you.

(maybe I'll make a list and post it for convenience.)