Automatically format your Word manuscript for Amazon KDP — print-ready PDF + Kindle ePub in 5 minutes.

kdp-book-formatter.netlify.app — Upload your .docx, pay $25, get both files emailed to you.

Upload a .docx manuscript and receive:

Amazon KDP requires very specific formatting that most authors don't know about:

• Page size: 6" × 9" (most common), 5.5"×8.5", 8.5"×11"
• Margins: 0.875" all sides (spine margin increases with page count)
• Font: Times New Roman, Garamond, Georgia, or equivalent
• Font size: 11pt–12pt body
• Line spacing: 1.15–1.5x
• First line indent: 0.3"–0.5" (no extra space between paragraphs for fiction)
• Page numbers: Required, typically bottom center, starting at chapter 1
• File format: PDF

• File format: ePub3 (preferred) or mobi
• ToC: Must have NCX navigation table of contents
• Images: Must be 72dpi+, max 127KB each recommended
• No page numbers in eBook version

• "Your file has formatting issues" → margins outside bleed area
• "Please embed all fonts" → font not embedded in PDF
• Spine too narrow → need 24+ pages for spine text

Built with Python:

• python-docx — parse Word documents, extract styles & content
• reportlab — two-pass PDF generation (first pass for page counts, second for real TOC)
• ebooklib — ePub3 creation with NCX navigation
• Pillow — image extraction and scaling
• Inception Mercury-2 (mercury-2) — AI-generated copyright text ($0.25/M tokens in)
• OpenRouter / Groq / OpenAI — fallback AI cascade

• Custom page sizes (currently 6×9 only)
• Cover design integration (Printify/Printful POD)
• Multiple chapter style detection improvements
• Hardcover spec support
• Spanish/French language support

• Amazon KDP Help
• Alliance of Independent Authors
• r/selfpublish — 170k authors
• r/KDP
• KBoards Writers Café
• Reedsy — professional editing/formatting marketplace

Hosted SaaS tool at kdp-book-formatter.netlify.app