Publishing field guide

KDP Formatting: Prepare a clean Kindle and paperback package before upload

Learn trim sizes, margins, bleed, fonts, front matter, EPUB checks and the difference between digital and print interiors.

Reviewed by Stefan Mitrović, Founder of Automateed · Updated July 16, 2026

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60-second summary

Quick answer

KDP formatting means preparing two different packages: a reflowable EPUB for the Kindle ebook and a fixed print PDF for the paperback, each with its own rules for dimensions, margins, navigation and covers. Format the ebook for reading apps, the print interior for a physical trim size like 6" × 9", and always finish in Amazon’s previewer. Automateed exports both packages — plus AI-drafted metadata — from one project.

Real product steps

How to prepare KDP-ready files in Automateed

One project produces both KDP targets. The key is treating the Kindle ebook and the paperback as separate outputs with separate checks.

Workflow map

The kdp formatting path inside one account

Lock the manuscript and front matter

Finish editing in Book Studio and enable the table of contents and copyright page in export options — KDP’s previewer checks navigation, and buyers expect proper front matter.

Export the EPUB for the Kindle edition

In the Export dialog choose EPUB (paid plans). This is the reflowable file the modern KDP upload flow accepts for ebooks — no MOBI conversion needed.

Export the print interior as PDF

Choose PDF and select the trim: Trade 6" × 9" carries the KDP badge as the standard choice; 5" × 8", 5.5" × 8.5", 7" × 10" and 8.5" × 11" cover other genres. Download and read the file page by page.

Generate the KDP package and metadata

Use the KDP format or the Amazon KDP Publishing Package dialog to get one ZIP with PDF, EPUB, DOCX, cover image and publishing instructions. Optionally have AI draft the listing metadata — title options, subtitle, description, seven keywords, categories — and edit it to match the book honestly.

Prepare the covers for each edition

The saved 1600 × 2560 px cover serves the ebook listing. For the paperback, build the wraparound (front, spine, back, bleed) in KDP’s cover calculator using the final page count.

Upload and run Amazon’s previewer

On KDP, upload each file to its edition and step through the previewer on multiple simulated devices. Fix anything it flags in the source project, re-export, and re-upload — never patch exported files by hand.

This diagram mirrors the product steps above so the guide remains usable even when the interface evolves.

01
Lock the manuscript and front matter
Finish editing in Book Studio and enable the table of contents and copyright page in export options — KDP’s previewer checks navigation, and buyers expect proper front matter.
02
Export the EPUB for the Kindle edition
In the Export dialog choose EPUB (paid plans). This is the reflowable file the modern KDP upload flow accepts for ebooks — no MOBI conversion needed.
03
Export the print interior as PDF
Choose PDF and select the trim: Trade 6" × 9" carries the KDP badge as the standard choice; 5" × 8", 5.5" × 8.5", 7" × 10" and 8.5" × 11" cover other genres. Download and read the file page by page.
04
Generate the KDP package and metadata
Use the KDP format or the Amazon KDP Publishing Package dialog to get one ZIP with PDF, EPUB, DOCX, cover image and publishing instructions. Optionally have AI draft the listing metadata — title options, subtitle, description, seven keywords, categories — and edit it to match the book honestly.
05
Prepare the covers for each edition
The saved 1600 × 2560 px cover serves the ebook listing. For the paperback, build the wraparound (front, spine, back, bleed) in KDP’s cover calculator using the final page count.
06
Upload and run Amazon’s previewer
On KDP, upload each file to its edition and step through the previewer on multiple simulated devices. Fix anything it flags in the source project, re-export, and re-upload — never patch exported files by hand.

Every step above describes the current Automateed interface — open a free preview and follow along with your own project.

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The full guide

Kindle ebook formatting rules that actually matter

For the ebook edition, three things decide approval and reading experience: a working linked table of contents, a cover image that meets minimum dimensions, and clean reflowable text without hard-coded page tricks. Fonts, margins and page numbers belong to the print edition; in the ebook, the reader’s device controls them. Formatting effort spent forcing pixel placement in an EPUB is effort spent breaking someone’s reading app.

Where ebooks do need care is imagery and tables: large images should be readable at phone width, and complex tables often work better redrawn as stacked lists.

KDP paperback margins, gutter and bleed requirements

Print interiors live by Amazon’s measurement tables: outside margins keep text off the trim, the inside gutter grows with page count because thicker books curve more, and bleed applies only when ink must reach the page edge. The requirements are published and occasionally updated, so verify against KDP’s current tables — linked from this guide’s sources — rather than a remembered number.

The practical workflow: export at your chosen trim, then flip through checking that nothing important sits near the page edge and chapter openings look deliberate. The previewer will catch hard violations; your eye must catch the merely ugly.

Front matter, page numbering and navigation Kindle buyers expect

A professional KDP book opens with a title page and copyright page, then a table of contents that works in both editions — clickable in the ebook, page-numbered in print. Automateed’s export toggles add these automatically, which prevents the most common first-book rejection reasons: missing navigation and absent copyright information.

Keep front matter short in the ebook edition. The Kindle sample begins at the start of the file, and readers deciding in a sample should reach chapter one quickly.

The KDP previewer as final quality gate

Amazon’s previewer simulates its own devices and flags hard errors — clipped content, missing fonts, cover mismatches — before publication. Treat it as the final gate, not the first check: files that were exported from a structured project and locally verified pass it quickly, while hand-patched files loop through rejection cycles. When the previewer flags something, fix the source project and re-export so every future edition inherits the fix.

Decisions that change the result

Make two editions from one source—without mixing their expectations

A common mistake in KDP formatting is treating “the book” as a single file that can be uploaded as both ebook and paperback. Amazon’s systems and reading experiences assume different layout models. The Kindle ebook is reflowable: font sizes, line breaks, and spacing change on the reader’s device. The paperback is fixed: every millimeter of the trim, outside margin, gutter, and page numbering must match the physical product Amazon prints.

In practice, you still want one authoring workflow, which is why Automateed is valuable: you build from one manuscript and front matter structure, then export to two targets that follow KDP rules. The decisions you make in the source (chapter headings, table of contents structure, what counts as front matter) affect both editions, but the final “pixel intent” must be confirmed separately for EPUB and print PDF.

Trim size decisions: what changes beyond the cover

Picking a trim size (for example, 6" × 9" vs. 5" × 8") changes more than the look of the cover. It changes how many words fit per page, which influences page count and therefore printing cost. It also changes how much room you have for headers, footers, and chapter titles so they do not collide with trimming.

Before you commit, export once early and do a fast consistency review: compare your chapter starts in the PDF interior to the way chapter headings appear in the ebook preview. If you’re doing something like short chapters or heavy use of tables, smaller trims often make those elements feel more crowded in print, while the ebook may remain readable because reflow handles it. That’s not a reason to choose based on taste alone; it’s a reason to verify readability in both outputs.

Fonts, weights, and embedding: avoid the “works on my computer” problem

KDP’s previewer will often catch problems that are invisible while you edit locally. For ebooks, missing or unstable font handling can cause fallback fonts that reflow unexpectedly, shifting line breaks and spacing. For print, font substitutions can change metrics, which can push content into areas that should remain safe from the trim or gutter.

A practical approach is to standardize your typographic choices early: pick a small set of fonts and weights for body, headings, and any emphasis. Then ensure your export keeps those fonts available to the output formats. If Automateed exports your project with embedded fonts for the ebook, that typically reduces device-to-device differences. If it doesn’t, you may see layout drift in the previewer and need to adjust how you style headings and paragraphs.

Worked example

Worked example: preparing a 6" × 9" nonfiction ebook + paperback package

You have a manuscript called “The Practical Interview” with: (1) a title page and copyright page, (2) a brief foreword, (3) 12 chapters with consistent heading styles, and (4) a short resource section at the end. You want Kindle ebook (reflowable) and paperback (fixed) both uploaded as one set from Automateed.

01
Lock front matter structure and verify TOC content mapping
In your source project, confirm that your title/copyright matter is included in the export settings for front matter, and that chapter headings are marked so a table of contents can be generated. The goal is not “pretty” front matter; the goal is predictable navigation boundaries: the ebook should jump into chapter one quickly, and the print edition should show page numbers that match the physical interior.
02
Export the Kindle edition as EPUB and do a device-style reading check
Export the ebook as EPUB. Open it using the KDP previewer and scroll through: title page presence, foreword readability, and chapter transitions. Look specifically at where the table of contents points in the ebook and whether chapter headings appear as intended. If any chapter title styling is inconsistent in the source, the ebook may create a table of contents that feels “almost right,” which is still a problem because readers rely on navigation during sampling.
03
Export the print interior as PDF for 6" × 9" and check safe zones
Export the paperback interior as PDF using the 6" × 9" trim option. In the PDF previewer view, flip through chapter openings and one or two pages from the middle of the book. Check three things: (1) nothing important sits too close to the trim edge, (2) your headers/footers and any running elements remain inside the safe margins across the book, and (3) chapter titles don’t feel cramped at the top of the page compared with your intention. If the book contains diagrams or screenshots, verify that they remain readable at print scale rather than just “not cut off.”
04
Generate the KDP submission package and re-check after re-export
Use Automateed’s KDP package generation so you get the required files aligned to the same project. Then upload both edition types to KDP and run the previewer steps. If you see clipped content or a navigation issue, return to the source project (not the exported file), adjust the underlying structure (margins, heading styles, or image scaling), and re-export so the fix applies to both outcomes in a controlled way.

When you treat Kindle and paperback as separate layout expectations—then verify each with the KDP previewer—you avoid the two most time-consuming problems: clipped print pages and navigation/reading confusion in the ebook.

Avoidable mistakes

What usually breaks this workflow

Forgetting that ebook navigation and print page numbering are not the same thing

A working table of contents in print does not guarantee a useful ebook navigation experience, and the reverse is also true. Confirm the TOC behavior separately in the KDP previewer for EPUB and PDF.

Using a single “margin look” to judge both editions

Margins that feel comfortable on a PDF page may be irrelevant to a reflowable ebook, while ebook spacing choices may not translate safely to a fixed print gutter. Always validate with each output format’s constraints.

Hand-adjusting exported files instead of fixing the source

If the previewer flags an issue, editing exported EPUB/PDF files directly tends to create new mismatches later (especially after re-running KDP package preparation). The reliable approach is to adjust styles, front matter, and layout inputs in the source project, then re-export.

Skipping page-by-page checking near chapter boundaries

Many formatting problems show up at chapter starts: headings that sit too high, page breaks that place content too close to the top, or front matter that pushes chapter one farther than expected. A quick scan of boundaries saves hours of troubleshooting later.

Keep the workflow moving

What to verify before acting on kdp formatting

Run these checks against the actual manuscript, files and reader journey before publishing.

No clipped content

TOC links work

Fonts are embedded where required

Cover dimensions match the interior

Continue the exact workflow

Tools and guides that belong after kdp formatting

Amazon Kdp Publishing Guide Kdp Print Royalty Calculator Book Cover Size Pixels Self Publishing On Amazon Kdp Paperback Publishing Amazon Kdp Ai Disclosure Policy Kindle Ebook Royalty Calculator Download Epub

Editorial note

What this guide does and does not prove

This page is a practical workflow, not a promise of sales, ranking, publishing approval or a specific reader outcome. Platform rules and professional requirements should be checked at the point of use.

Questions specific to KDP Formatting

Before you start

What file does KDP want for the ebook?

EPUB. Amazon’s current upload flow accepts reflowable EPUB for Kindle ebooks and converts internally. Automateed exports it directly, and the KDP package includes it.

What file does KDP want for the paperback?

A print-ready PDF interior at your chosen trim size plus a separate wraparound cover PDF sized by page count. The interior comes from Automateed’s PDF export; the cover wrap is built in KDP’s calculator.

Which trim size does Automateed recommend for KDP?

Trade 6" × 9" carries the KDP badge in the export dialog and is the most common self-publishing trim. Genre conventions may point to 5" × 8" for fiction or 7" × 10" and up for workbooks.

Do Kindle ebooks need page numbers?

No — reflowable text has no fixed pages. Page numbers, headers and gutters are print-interior concerns. The ebook needs working chapter navigation instead.

Can AI write my KDP listing metadata?

Automateed can draft title variations, a subtitle, description, seven keywords and category suggestions from the book itself. Review every line: metadata must describe the actual book truthfully or it hurts both ranking and trust.

Why did the previewer flag my file?

Most flags trace to hand-edited exports or converted files: broken navigation, missing fonts, images below resolution. Fix the issue in the source project, re-export, re-upload.

Is one combined file for ebook and print possible?

No. The editions have opposite layout models — reflowable vs fixed. Produce both from one project, but never submit one file to both editions.

Do I need bleed for a text-only book?

No. Bleed is for ink reaching the page edge — full-page images and edge decorations. Standard text interiors export no-bleed with white margins.

How do KDP royalties interact with formatting choices?

Print cost scales with page count and ink type, and comes out of your list price before royalty. Trim size, font size and image count all move page count, so formatting is quietly a pricing decision.

Should I answer KDP’s AI questions during upload?

Yes, truthfully, based on how the book was actually produced. Amazon distinguishes AI-generated from AI-assisted content in its current guidelines — read them at upload time and keep production records.

How do I decide whether a front matter section should appear in the ebook sample first?

In practice, treat the ebook sample like a reading trial: the viewer should reach the content promise quickly (typically chapter one). If you include multiple front matter blocks, shorten what comes before chapter one in the ebook export by ensuring only the necessary sections are marked as front matter. Then confirm in the KDP previewer that the table of contents and navigation jump to the expected locations.

Can I keep the same title/heading formatting for ebook and print to reduce rework?

Yes, but confirm the results after each export. Consistent heading styles in the source make it easier to generate a clean TOC and consistent chapter structure. After exporting, verify that ebook typography stays readable on narrow screens and that the print interior does not push headings into unsafe margin areas. If you need different spacing rules, adjust the source styling so the exports are consistent rather than manually patching outputs.

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