It's one-indexed, counting that actual pages in the PDF. The nominal page numbers (as seen on the header/footer) are often different since you don't typically

It's one-indexed, counting that actual pages in the PDF. The nominal page numbers (as seen on the header/footer) are often different since you don't typically number title pages and the like, which is called "front matter". [0] 0: https://kdp.amazon.com/en_US/help/topic/GDDYZG2C7RVF5N9J#frontmatter https://kdp.amazon.com/en_US/help/topic/GDDYZG2C7RVF5N9J#fro...