From Traction Software:
PDF Imposition DE software automates the process of 2up, 3up, 4up, 6up, 8up, 10up or 12up a pdf document, so for example with a/b 2up page 1 is on the left and page 2 is on the right, with split 2up (4 page document) page 1 is on the left and page 3 is on the right, then page 2 is on the next page left and page 4 is on the right. Optional convert 2up pdf back to 1up format, this is done by splitting on vertical position on the page. perfect for pdf's that have been scanned in like books (2 pages). It has an optional down parameter for 2up'ing downwards on a page rather than across the page (left, right). The output page size can also be controlled and the 2nd page position can be offset with margin controls. Optional duplex options for outer-in for booklets, so for e.g. 2up 8 pages source you get output pages: 8,1 2,7 6,3 4,5 - 4 pages output for duplex printing. 4,1 2,3 and 1,4 2,3 duplex options also. Optional duplicate option for duplicating pages so you get the same page 1,1 left and right output. Optional rotate all, odd or even pages option. DE version is standalone i.e. Adobe Acrobat is not required.
What's new in this version:
Version 1.22 added a pre-press function for keeping fonts rather than converting unknown fonts to bitmaps.