How to Format a Book for Print and Ebook in 2026
Estimated read: 13 minutes — By the Authors Unite Team
TL;DR
Book formatting is the invisible work that makes a book feel professional. Get it right and readers never notice. Get it wrong, and every page screams “self-published amateur.” Print and ebook require completely different formatting approaches — print is fixed-layout typography (trim size, margins, fonts, page breaks) while ebook is responsive flowing text that adapts to any device. Most authors should use a professional formatter or a dedicated tool (Vellum on Mac or Atticus on Windows) rather than fighting with Microsoft Word. The Authors Unite Guide walks through what each format requires and how to get it done.
Why Formatting Matters More Than You Think
Most readers can’t articulate what makes a book feel professional rather than amateurish. They just sense it. After a few pages, they form an impression — and that impression shapes everything: how seriously they take the writing, whether they finish, whether they recommend the book to friends.
A surprising amount of that impression comes from formatting. Specifically:
Typography choices. Serif vs sans-serif, font weight, line spacing, letter spacing. A book set in Garamond reads as serious; the same book set in Arial reads as a corporate memo.
Page layout. Margin width, chapter opener design, running heads, page numbers, drop caps, scene break ornaments.
Pacing through white space. Where chapters end, how scene breaks are marked, and whether each chapter starts on a recto (right-hand) page.
Consistency. Every chapter was laid out the same way, every header in the same font and weight, every section break using the same separator
These choices are made invisibly by every trade-published book. Readers who pick up a Penguin paperback don’t think “nice 18-point chapter heading in Caslon” — they just feel that the book is professional. When the same readers pick up a self-published book set in Microsoft Word’s default Calibri with awkward page breaks and 1-inch margins, they feel something is off, even if they can’t say what.
This is fixable in a weekend with the right tools and a small budget. Skipping it is one of the most common self-publishing mistakes.
Print vs Ebook: Two Completely Different Problems
Before getting into specifics, you need to understand that print and ebook formatting are fundamentally different problems requiring different approaches.
Print formatting is a fixed layout. Every page is a specific size with specific margins. Every line of text falls on a specific spot. Fonts are embedded. Page numbers, headers, and footers appear in specific positions. A 6×9 paperback page never re-flows — it looks exactly the same on every copy of the book.
Ebook formatting is responsive, with a flowing layout. The same content has to adapt to a small phone screen, a Kindle e-ink reader, an iPad, a large display, and a screen reader for visually impaired users. Font size, line breaks, and even font choice are partially user-controlled. You can’t say “this paragraph starts on page 47” because there is no page 47 — pages don’t exist in an ebook the way they do in print.
The implication is that file formats and tooling differ for each. You can’t take a print PDF and “convert it” to a quality ebook. You build them in parallel from the same source manuscript.
Print Formatting: The Essentials
A well-formatted print book gets these things right:
Trim size. The physical dimensions of the book. Standard sizes for self-published trade paperbacks:
5×8 inches: most common for fiction and short nonfiction
5.25×8 inches: slightly more common in romance and fiction
5.5×8.5 inches: business and nonfiction; gives more text per page
6×9 inches: most professional nonfiction, memoir, and academic
7×10 inches: textbooks, workbooks, photo-heavy books
Pick the size that matches your category. A romance novel in a 7×10 trim feels wrong; a business book in a 5×8 feels small. Look at the top 10 books in your category for the right size.
Interior margins. A print book has different margins on the “inside” (toward the spine) versus the “outside” of each page. The inside needs more space because of the binding. Standard values:
Inside margin: 0.75-1.0 inches
Outside margin: 0.5-0.75 inches
Top margin: 0.6-0.8 inches
Bottom margin: 0.6-0.8 inches (plus space for page numbers)
These shift slightly based on trim size and page count. A 400-page book needs more inside margin than a 150-page book because the binding “swallows” more text on thicker books.
Body font. Use a serif font for body text. Serif fonts (Garamond, Caslon, Sabon, Minion Pro, Adobe Caslon, EB Garamond) are dramatically more readable in print than sans-serif fonts. The classic publishing fonts in 2026:
Garamond (a workhorse for fiction and nonfiction)
Caslon (slightly more elegant; common for memoir)
Sabon (warmer, slightly larger feel)
Minion (clean and modern; common in business books)
EB Garamond (free, open-source alternative to commercial Garamond)
Font size: 10.5-12 point body text is standard. Line height (leading): roughly 1.2-1.4× font size.
Chapter openers. Each chapter should start on a fresh page (always on the odd/right-hand page for trade books). Chapter openers traditionally have a drop-down of 1-2 inches before the chapter number/title, distinctive typography for the chapter label, and often a decorative element (small ornament, hairline rule, oversized first letter).
Running heads and page numbers. Page numbers appear at the bottom (or top) of every body page, but not on chapter opener pages or front matter. Running heads (author name on left page, book title on right page, both in small caps or italic) appear on every body page except chapter openers.
Scene breaks. Within chapters, use a centered ornament (✦, , **), three asterisks, or extra white space to mark scene breaks. Be consistent throughout the book.
Widow and orphan control. A “widow” is a single line of a paragraph appearing at the top of a page. An “orphan” is a single line at the bottom. Both look amateur. Your formatting tool should prevent these automatically.
Ebook Formatting: A Different Problem
ISBN registration is handled by national agencies. Where you buy depends on where you live:
Ebook formatting requires you to forget almost everything about print:
Pages don’t exist
Fonts are largely user-controlled (the reader picks their preferred font and size)
Layout adapts to screen size automatically
Printed page numbers are meaningless
Drop caps, decorative elements, and complex typography often break or render inconsistently
What ebook formatting actually requires:
A clean EPUB file. EPUB is the open standard for ebooks. Amazon’s Kindle uses a converted version (KFX or AZW3), but you create a proper EPUB first and convert from there.
Semantic structure. Each chapter is marked with proper HTML headings (h1 for chapter titles, h2 for section breaks within chapters). This is what allows readers to navigate via the table of contents and what screen readers use for visually impaired readers.
Working table of contents. A clickable, navigable TOC is essential. Most ebook formatting tools generate this automatically from your chapter headings, but verify it works.
Hyperlinked footnotes and references. For nonfiction with footnotes, ebook footnotes should be clickable to jump from the reference to the note and back. PDF-style “see footnote on page 47” notation doesn’t work in an ebook.
No fixed-position elements. Print typography tricks (drop caps, decorative chapter openers, sidebars, pull quotes) need to be simplified or removed in the ebook. They usually break across devices.
Consistent image sizing. Images in ebooks should be sized to render reasonably on small phone screens (typically max 600-800 pixels wide) since you can’t predict the reader’s device.
Front matter and back matter. Same as print but reformatted for ebook: copyright page, dedication, contents, foreword (if applicable), and then back matter — about the author, also-by, and any calls to action.
The Tools That Actually Work
The market for book formatting tools has consolidated around a few clear winners. Most authors should use one of these rather than fighting with Microsoft Word.
Vellum (Mac only)
The most popular formatting tool for serious self-publishers using Macs.
Strengths:
Beautiful default templates
Generates both print PDF and ebook (EPUB) from a single source
Outputs different ebook formats for Kindle, Apple Books, Kobo, etc., simultaneously
Strong typography out of the box
Easy to use without typesetting experience
Weaknesses:
Mac only (significant limitation)
Templates are somewhat limited — books formatted in Vellum can look similar to other books formatted in Vellum
Not ideal for complex layouts (textbooks, photo books, workbooks)
For most fiction and standard nonfiction authors on Mac, Vellum is the right tool.
Atticus (cross-platform)
Vellum’s main competitor works on Mac, Windows, Linux, and Chromebooks.
Strengths:
Cross-platform availability
Cloud-based, accessible from any device
Active development with frequent updates
Strong template library
Weaknesses:
Less polished output than Vellum in some areas
Newer tool with a smaller user base, so fewer troubleshooting resources
For Windows or Linux authors seeking a Vellum-equivalent experience, Atticus is the standard choice.
Adobe InDesign (professional)
The industry-standard professional typesetting tool.
Strengths:
Total control over every typographic detail
Industry standard for trade publishing
Best output quality possible
Handles complex layouts (textbooks, photo books, multi-column)
Weaknesses:
Steep learning curve
Subscription cost
Overkill for most authors
Best for authors with design backgrounds, complex layout needs, or authors hiring a professional typesetter who uses InDesign.
Microsoft Word (NOT recommended)
Word can theoretically produce a publishable book, but the output rarely looks professional. Word formatting issues are a major cause of amateur-feeling self-published books.
If you must use Word, use one of these converters: Atticus or Vellum will import a Word document and apply proper formatting. Don’t submit a raw Word document to KDP for print — the result will look like a Word document, not a book.
Hiring a Professional Formatter
If formatting yourself isn’t appealing, professional formatters can handle this in a few days.
What you get:
Print-ready PDF (typically for both 6×9 and any other trim sizes)
EPUB file for ebook distribution
Often MOBI or KPF for Kindle-specific distribution
Multiple proof rounds to fix issues
Sometimes interior design (chapter opener design, ornaments)
Where to find formatters:
99designs (broader designer marketplace)
Recommendations from other self-published authors in your genre
Directly from designers whose work you’ve admired
What to provide:
Final, edited manuscript (Word doc preferred)
Trim size and format preferences
Any specific design preferences or comp books whose interiors you like
Front matter and back matter content (copyright page text, dedication, author bio, etc.)
All images at appropriate resolution
Timeline: 1-3 weeks for typical books. Allow time for 1-2 rounds of revision.
What Goes in Front Matter and Back Matter
Both formats require front matter (everything before chapter 1) and back matter (everything after the last chapter). Most authors forget this and end up with awkward, incomplete-feeling books.
Standard front matter:
Half-title page (book title only)
Title page (full title, subtitle, author, publisher/imprint)
Copyright page (copyright notice, ISBN, edition info, disclaimer)
Dedication (optional)
Table of Contents
Foreword (optional, written by someone other than the author)
Preface or Introduction (optional, written by the author)
Standard back matter:
Acknowledgments
About the author (with photo, bio, links)
“Also by [Author]” (if you have other books)
Book club discussion questions (for fiction or memoir aimed at book clubs)
Index (for nonfiction)
Bibliography or References (for nonfiction with citations)
Call to action — the most important back-matter element for nonfiction: a clear next step that drives readers toward your funnel (email list, website, consulting, etc.)
The call-to-action page is one of the highest-ROI elements in your entire book. Most authors leave revenue on the table by skipping it. Include a clear “what’s next” with a specific URL — this is what turns book readers into email subscribers, clients, and customers.
Common Formatting Mistakes
After working with thousands of self-published manuscripts, these patterns appear constantly:
Inconsistent chapter openers. Some chapters drop 2 inches, some drop 0.5 inches. Some have decorative elements, some don’t. Looks amateur.
Wrong margins for trim size. 1-inch all-around margins look fine in a Word document and terrible in a 5×8 paperback (the text feels cramped against the spine).
Sans-serif body text in print. Calibri, Arial, Helvetica, and other sans-serif fonts work for the web but feel wrong in book form. Use serif for body.
Manual line breaks instead of automatic flow. Authors who hit Return at the end of every line create files that break horribly when reformatted. Let the software handle line breaks.
No ebook-specific version. Submitting a print PDF as an “ebook” produces a terrible reading experience. Build the ebook as a separate file from the start.
Forgotten back matter. No author bio, no call to action, no “also by” — readers reach the end and have nowhere to go.
Mismatched paperback and hardcover. If you publish both formats, they should use the same interior layout, just scaled to the different trim sizes.
Front matter that won’t end. Endless dedications, multiple forewords, a five-page preface — readers skip all of it and resent reaching for the book. Keep front matter tight.
How Formatting Fits Into Self-Publishing
Formatting comes after editing and before launch.
For the full sequence, see Authors Unite’s: The Complete Roadmap to Self-Publishing in 2026
1. Manuscript Writing Outline Guide)
2. Editing is the developmental, line, and copy (covered in our Editor Guide)
3. Cover design Book Cover Design That Sells)
4. Formatting
5. Proofreading the final laid-out file
6. Distribution setup: KDP, IngramSpark, D2D, ACX
7. Pre-launch and launch (covered in The Complete 90-Day Book Launch Checklist)
Frequently Asked Questions
Can I just upload a Word document to Amazon and let them format it?
Technically, yes — KDP will accept a Word doc and convert it. The output will look like a converted Word document, not a professional book. Don’t do this.
What file types do I need to provide for each platform?
- Amazon KDP (print): PDF (specific trim size with bleed)
- Amazon KDP (ebook): EPUB, DOCX, or KPF (Kindle Create file)
- IngramSpark (print): PDF (specific trim size with bleed and crop marks)
- IngramSpark (ebook): EPUB
- Draft2Digital, Apple, Kobo: EPUB
How long does formatting take?
Self-formatting in Vellum/Atticus: 4-8 hours for a typical book after learning the tool. Professional formatter: 1-3 weeks. Allow 2-4 weeks if hiring out, between back-and-forth and revisions.
Do I need different formatting for hardcover vs paperback?
The interior layout is the same; only the trim size and spine width change. Your formatter or formatting tool handles the different cover dimensions automatically.
What about audiobook formatting?
An audiobook has its own production process (script preparation, narration, audio engineering, mastering, ACX/Findaway upload). Not really “formatting” in the same sense. Plan separately for audiobook production.
Should I use the same fonts as my comp titles?
Roughly yes, especially for body text. Most professional books in your category use one of a handful of standard serif fonts. Match the conventions of your category rather than trying to be distinctive.
Can AI tools format my book?
Not well, as of 2026. AI can suggest layout decisions, but the actual output quality of AI formatting is significantly lower than that of dedicated formatting tools. Use Vellum, Atticus, or a professional formatter.
Your Next Step
Formatting is one of those parts of self-publishing where a small investment yields large quality improvements.
Authors Unite handles formatting and interior design as part of our publishing services for many of our authors — across both print and ebook formats, ready for distribution on every major platform.
Schedule a call with Authors Unite to discuss your book's formatting and production.