How to Format an eBook for Kindle (KDP Manuscript Guide 2026)

Kindle is the largest eBook distribution platform on earth, and it's also the most opinionated about how your file should be structured. A manuscript that looks perfect in Google Docs or Word can render as a formatting disaster on a Kindle Paperwhite — stranded chapter headings, broken table of contents, missing scene breaks, typography that fights the device. The difference between a book that looks professional on Kindle and one that doesn't is roughly three hours of manuscript preparation.

This guide covers what Amazon KDP actually requires in 2026, how to prep your manuscript before upload, and the specific formatting choices that separate polished indie books from obvious amateur uploads. It applies to both fiction and non-fiction — Kindle's formatting rules don't care about genre.

Which file format to use

KDP accepts several formats, but not all are equal. In order of how well they render:

• EPUB (.epub) — the cleanest option. Reflows perfectly across Kindle devices and apps. Use EPUB if your authoring tool exports it.
• Word (.docx) — fine for text-heavy books without complex layout. Amazon converts DOCX to their internal format; most small formatting inconsistencies get cleaned up.
• PDF (.pdf) — accepted but typically worst rendering on small screens. PDFs don't reflow — text gets cramped on phones. Avoid for Kindle unless you have a design-heavy book that must preserve fixed layout.
• KPF (Kindle Create output) — Amazon's proprietary format. Works if you're using Kindle Create for authoring; no advantage over EPUB if you're not.

Our recommendation: author in your preferred tool, export to DOCX, convert to EPUB with Calibre (free) or Reedsy's free converter, upload the EPUB to KDP. One extra step, meaningfully better results.

The required manuscript sections

Every Kindle book should include these sections, in this order:

1. Title page — book title, subtitle, author name. No page number.
2. Copyright page — "© 2026 [author name]. All rights reserved." Plus ISBN if you have one (optional for KDP eBooks).
3. Dedication or acknowledgments (optional, but professional).
4. Table of contents — required for books over ~20 pages. EPUB auto-generates this from properly styled chapter headings; in DOCX you need to add it manually via Word's "Insert Table of Contents" feature.
5. Chapters — each chapter starts on a new page. Chapter heading styled as Heading 1.
6. About the author — 150–250 words at the end. Include one soft CTA to your website or email list. No hyperlinks to other retailers (Amazon strips them).
7. Also by this author — if you have a series or other books, list them. Cross-link accordingly.

Typography: Kindle-friendly choices

Kindle readers adjust font size, typeface, and margins on their own devices. This means: whatever typography choices you make, most readers will override them. The corollary: don't waste time on custom body typography. Focus on:

• Chapter heading style — use Heading 1 with a consistent font choice. This carries through to the reader's device.
• Paragraph indentation vs. block paragraphs — fiction typically uses indentation; non-fiction typically uses block paragraphs with line spacing. Pick one and commit across the whole book.
• Scene breaks — three centered asterisks or a fleuron (*** or ❧) between scenes. Avoid blank lines without markers; they collapse unpredictably.
• Drop caps — optional, work in EPUB, look nice on larger screens. Skip if you're not sure.

Chapter structure — the #1 rejection reason

Amazon's most common formatting rejection: chapter headings not styled as Heading 1 / Heading 2. This breaks their automatic table of contents generation and makes the book feel unnavigable.

The fix:

• Chapter titles: Heading 1 style (Word: Ctrl+Alt+1; Google Docs: Format > Paragraph > Heading 1)
• Sub-sections within chapters: Heading 2
• Body text: Normal / Default
• Insert a page break (not just a line break) between chapters

This takes 20–40 minutes to fix on a full manuscript. It's the single most impactful formatting change you can make.

Handling images, tables, and code blocks

Kindle handles images reasonably well but doesn't love them. Guidelines:

• Image size: 600px wide max. Kindle downsizes anything larger; images look pixelated.
• Image format: JPG for photos, PNG for diagrams with text. Keep file sizes under 500 KB each.
• Tables: simple tables work; complex tables with merged cells often break. Consider converting to a bulleted list or a simple image if the table has more than 4 columns.
• Code blocks: use a monospaced font (Courier, Consolas). Kindle supports code styling but line wrapping can break long lines; aim for 60-character max per line.

Hyperlinks and internal navigation

Kindle supports:

• External hyperlinks to non-Amazon URLs (your website, your email signup, a Wikipedia article) — these work fine
• Internal cross-references (chapter 5 → link to chapter 12 within the book) — fully supported
• Clickable table of contents — required; EPUB generates automatically; DOCX needs manual setup

Kindle does NOT support:

• Direct links to competitor eBook retailers (Barnes & Noble, Kobo, Apple Books) — Amazon strips these
• JavaScript or interactive content
• Embedded video or audio

Previewing and fixing issues before upload

KDP provides a free previewer (Kindle Previewer 3) that simulates how your book will render on different devices. Use it. Common issues it catches:

• Chapter headings stranded at the bottom of a page (orphan control not applied)
• Images scaled incorrectly on specific device sizes
• Table of contents linking to wrong pages
• Inconsistent font size within body text
• Missing or broken page breaks

Preview on all three device types: Kindle Paperwhite (smallest screen), Kindle Oasis (mid-size), Fire tablet (largest). Most first-time uploaders only check one, miss issues that show up on another, and get negative reviews about formatting.

Using AI tools to speed up formatting

If you drafted your eBook with an AI tool like GETebook.ai, the manuscript typically exports with proper heading structure already applied — Heading 1 on chapter titles, consistent body styles, automatic page breaks at chapter boundaries. This saves the 20–40 minute heading cleanup pass and produces a KDP-ready file directly.

For content drafted in Word or Google Docs manually, you'll need to audit heading styles, insert page breaks, and add the table of contents yourself. Neither workflow is wrong; AI-drafted manuscripts just skip the step.

Pre-upload formatting checklist

• [ ] Title page, copyright page, table of contents, chapters, about-author all present
• [ ] Chapter titles styled as Heading 1; subsections as Heading 2
• [ ] Page breaks between chapters (not just line breaks)
• [ ] All images under 600px wide, under 500 KB
• [ ] Scene breaks marked with *** or fleuron
• [ ] No direct links to competing eBook retailers
• [ ] Previewed in Kindle Previewer 3 on Paperwhite + Oasis + Fire simulations
• [ ] EPUB export tested in Calibre or Reedsy converter
• [ ] File under 50 MB total

Once these are checked, you're ready to upload. See our KDP publishing walkthrough for the rest of the upload flow — metadata, pricing, categorization, and launch-week strategy.