Complete KDP Paperback Formatting Guide: 9 Steps to Print-Ready Books

You need your manuscript completed in a word processor (Microsoft Word, Google Docs, or Scrivener work best). Your cover design should be ready as a high-resolution PDF or you'll need KDP's Cover Creator. Have your KDP account set up with tax information completed.

Estimate 2-4 hours for first-time formatting, 30-45 minutes once you know the process. Adobe InDesign or Canva Pro speed up the process significantly, but aren't required.

Log into KDP and start creating your paperback. Select from 15 available trim sizes. For novels, 6×9 inches offers the lowest printing costs. Non-fiction works well at 7×10 inches. Children's books typically use 8.5×8.5 inches.

Avoid 5×8 inches unless your book is under 100 pages — the narrow format increases per-page printing costs by roughly 15%. Square formats (8.5×8.5, 8×8) cost more to print but work well for visual content.

Common mistake: Choosing 8.5×11 inches thinking it looks more professional. This size has the highest printing costs and feels awkward for most readers.

Open your word processor and set custom margins. For books under 150 pages: 0.25" top, bottom, outside margins, 0.375" inside margin (gutter). Books over 150 pages need 0.5" inside margins to accommodate binding.

In Microsoft Word: Page Layout > Margins > Custom Margins. In Google Docs: File > Page Setup > Custom. Set your page size to match your chosen trim size exactly.

Common mistake: Using default document margins (usually 1 inch all around). This wastes space and increases your page count unnecessarily.

Set your body text to 10-12pt for optimal readability. Times New Roman, Garamond, or Georgia work well for novels. Sans-serif fonts like Calibri work for non-fiction. Line spacing should be 1.15-1.3 (not double-spaced).

Chapter titles: 16-18pt, bold or different font. Page numbers go in headers or footers, 0.5" from page edge. Start page numbering on page 1 of Chapter 1, not on title pages.

Common mistake: Using fonts smaller than 9pt. KDP's review team flags books with text too small to read comfortably.

Your paperback needs: title page, copyright page, and table of contents (if applicable). The title page shows your book title, subtitle, and author name. Copyright page includes copyright notice, ISBN (if you have one), and edition information.

Place these before Chapter 1. KDP requires the copyright page for legal compliance. If you're using KDP's free ISBN, mention "Published by [Your Name]" on the copyright page.

Common mistake: Forgetting the copyright page entirely. This can delay your book's approval by 24-48 hours while KDP requests revisions.

Each chapter should start on a new page. In Word: Insert > Page Break. In Google Docs: Insert > Break > Page Break. Avoid using multiple paragraph returns to create page breaks — this creates formatting issues.

Ensure no orphaned lines (single lines at the top of a page) or widowed lines (single lines at the bottom). Adjust paragraph spacing or add/remove words to fix these issues.

Common mistake: Using Enter key repeatedly instead of page breaks. This causes chapters to shift when you make edits elsewhere in the document.

Save your formatted document as a PDF. In Word: File > Export > Create PDF/XPS. In Google Docs: File > Download > PDF Document. Ensure your PDF is under 650MB — KDP rejects larger files.

Check that fonts are embedded properly by opening the PDF and zooming to 200%. Text should remain crisp. If fonts look pixelated, your PDF creation settings need adjustment.

Common mistake: Saving as a low-quality PDF to reduce file size. This makes text blurry in print. Use "High Quality Print" settings instead.

Use KDP's Cover Creator for simple designs or upload your own PDF. Your cover needs front, back, and spine. KDP calculates spine width automatically based on page count and paper type.

Cover dimensions vary by trim size. For 6×9 books, covers are typically 12.25×9.25 inches with 0.125" bleed. High-resolution images (300 DPI minimum) prevent pixelation.

Common mistake: Creating covers without bleed margins. This causes white edges when the book is trimmed during printing.

In your KDP dashboard, upload your interior PDF under "Paperback Content." Upload your cover file or use Cover Creator. KDP processes files in 5-10 minutes typically.

Use the online previewer to check every page. Look for cut-off text, misaligned elements, or formatting issues. The previewer shows exactly how your printed book will look.

Common mistake: Skipping the preview step. About 23% of first uploads have formatting issues visible only in the previewer.

Before publishing, order a physical proof for $2.50-$15 depending on page count and shipping. This reveals issues invisible on screen — binding problems, color accuracy, or text positioning.

Proof copies arrive in 3-7 business days in the US. Review every page, especially margins near the binding. Make any necessary corrections and upload revised files.

Common mistake: Publishing without ordering a proof. Physical books often look different than screen previews, especially regarding margins and color.

File too large: Compress images in your document or save PDF at lower quality. Keep text crisp while reducing image file sizes.

Text cut off near binding: Increase your gutter margin by 0.125" and re-upload. This is the most common formatting issue.

Cover spine text misaligned: Double-check your page count matches what you entered in KDP. One page difference shifts spine positioning significantly.

Blurry text in proof: Your PDF fonts aren't embedded properly. Re-save using "High Quality Print" settings and ensure font embedding is enabled.