KDP Paperback Formatting Guide
Quick answer
KDP paperback formatting starts with the correct trim size, mirrored margins, page numbers, headers and footers, section breaks, and a clean PDF export. Most layout rejections come from small mismatches: page numbers too close to trim, section breaks changing margins, tables overflowing, or a PDF exported with scaling. Build the interior around final trim and margin rules, then check the exported PDF.
When this matters
This matters when preparing a Word manuscript, fixing page numbers, setting headers and footers, using section breaks, placing tables, or converting to PDF for KDP paperback upload. It is the main workflow guide for interior formatting issues.
Common causes
- Word section breaks carry different page size or margin settings.
- Page numbers are too close to the trim or binding area.
- Headers and footers violate safe margins.
- Tables extend beyond the printable area.
- Mirror margins are disabled for paperback binding.
- PDF export uses scaling or a printer preset.
How to check
Review the source document first, then inspect the exported PDF. Check odd and even pages, chapter openers, pages after section breaks, tables, headers, footers, and page numbers. Confirm the PDF page size equals the selected KDP trim size and that no export scaling was applied.
Tool
Use the Gutter Calculator, Trim Size Calculator, and pre-upload checklist before uploading.
Related KDP errors
Before uploading again
Use the pre-upload checklist and run the risk scan after exporting the final interior PDF.