Ebook and paperback are different jobs
Kindle ebooks reflow text; paperbacks are fixed pages with trim size, margins, and spine width. Format each delivery separately even if the words are the same.
Manuscript structure Amazon likes
Use a clean hierarchy: title page, copyright, dedication (optional), table of contents, then numbered chapters. Start chapters on new pages. Keep styles consistent — one body style, one heading style.
- Avoid tab characters for indents; use paragraph styles
- Do not paste huge images into every chapter without compression
- Use page breaks between chapters, not dozens of empty lines
- Front matter should be short and professional
Ebook (EPUB / KPF) tips
Export a valid EPUB when possible, or use Kindle Create if you prefer Amazon’s path. Preview with Kindle Previewer. Check TOC links, image sizing, and that special characters render correctly.
Paperback tips
Pick trim size early (e.g. 5×8 or 6×9). Set margins for your page count. Generate a cover wrap that matches exact spine width from Amazon’s calculator. Upload PDF interiors that embed fonts.
AI Book Maker can produce KDP-oriented packages from your edited manuscript so chapter structure and export stay in sync — still run Previewer and the paperback proof before approving.
FAQ
Why was my paperback cover rejected?
Usually wrong dimensions, low DPI, or missing bleed. Rebuild from Amazon’s template for your trim size and page count.
Can I upload DOCX to KDP?
Yes for many ebooks, but EPUB or a well-prepared Kindle file often previews more predictably.