I have a pdf that I am reading in Preview and I would like to view it in 2 page mode as many pages reference illustrations on the next page. However, when I enable 2 page mode, the left page is put on the right and the previous right page is put on the left. Is there any way to fix this and view the 2 pages that would go with one another in a physical copy of the book?
A workaround would be to use Skim.app, an open source PDF reader replacement. Don't worry, it's very lightweight.
Open the PDF, from the PDF menu, select PDF Display → Two Pages Continuous. Now, the default view is:
… which is called "Book Mode". Preview.app doesn't allow us to change this option. In Skim.app, we can disable Book Mode from the PDF Display menu:
So, either way, you'll be able to fix the left/right issue for any PDF. Preview.app doesn't seem to make this "Book Mode" selectable, even though it kind-of uses the same menu as Skim and I found a hint that it actually used to have it. I can't see it on OS X 10.6.8 though.