Reformat PDF to landscape, facing pages (2up them, magazine-style) while retaining links? (Windows)

I have a 1,000 page PDF with portrait pages. I want a 500-page PDF, with each page consisting of two original pages. Nothing exciting about the layout, just the same as what I'd get printing it 2 pages per sheet , e.g.: image of PDF program's print options set to 2 pages per sheet The trick is that the PDF has internal links to pages and chapters, and I want those retained. First approach was to use my PDF viewer software to print to a new file, but the links weren't retained. Then I went with software that merges pages ( https://github.com/raffaem/pdfsak , which relies on Ghostscript and/or L

Question by bigjoec on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.