Do I need to imposition my Booklet files? January 18, 2014 00:41 Updated Follow No, your booklet files will be impositioned during our prepress processes. Please supply your design files as single pages (not spreads or imposed) in one PDF. See: Press-ready files for Booklets. Related articles Design Considerations for Booklets Inside Pages Setup for a Perfect Bound Book Can I do a full bleed cover on my Booklet? Will the spine show cracking?