: Converting a PDF that has multiple pages per page into all single pages I recently started a project converting a magazine's PDFs into a digital reader app. Up until now, the PDFs that were

@Welton168

I had this same issue, but all I did was copy each page and then crop them. ie. Crop the first copy on the left and then 2nd copy on the right. Acrobat resized the cropped section to a full page and as far as I can tell, the document is good.

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@Tiffany317

You can use the freeware Briss. I've tried it and it works fine. You can read more details here.

Unpack the zip file, run briss-0.9.exe and load your PDF file. The program show 2 template pages, representing odd pages and even pages.

Draw 2 blue rectangles (1 and 2) in odd pages (usually occupying the entire page). Do the same in even pages. The rectangles also are labeled as 1 and 2

Select Crop PDF and save as a new name.

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@Speyer780

@Scott is correct. It sounds like they are sending you full spreads rather than the single page PDFs, and that should be very easy for them to fix.

However, for the "programmer/designers" among us, I thought I would share another solution. This requires:


pdfinfo from xpdf to identify the bounding box of the page in points
gs from Ghostscript to split the left and right pages
pdftk from the PDF Toolkit to put the PDF back together again.


Once these are all installed and in your PATH, you should be able to do the following.

Imagine you are dealing with a file named Example.pdf. You first run:

pdfinfo -f 1 -l 1000 -box Example.pdf


This will give you a lot of info about your PDF, including, for each page, the size in points as Page 1 size: 595 x 842 pts (A4). We need this information for our gs command. Specifically, each page (after being split) is 421 points wide by 595 points high. Since Ghostscript's pdfwrite's resolution is 720 dpi and 1 inch is 72 points in PDF, we'll multiply those values by 10 in the pdfwrite step below.

gs
-o out%03d_A.pdf
-sDEVICE=pdfwrite
-g4210x5950
-c "<</PageOffset [0 0]>> setpagedevice"
-f Example.pdf
gs
-o out%03d_B.pdf
-sDEVICE=pdfwrite
-g4210x5950
-c "<</PageOffset [-421 0]>> setpagedevice"
-f Example.pdf


If you are using Windows, replace the "" with "^".

The above commands will create a bunch of files named something like "out001_A.pdf", "out001_B.pdf" and so on. Notice for the right pages, we use a negative page offset.

Finally, use pdftk to put it all back together again.

pdftk out*_?.pdf cat output combined.pdf


This worked like a charm for me ;)

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