Most readers can't articulate why a book feels amateurish — but they know it instantly. Cramped margins, inconsistent chapter headings, incorrect indentation, and poorly typeset body text all signal that a book wasn't professionally produced. Formatting isn't decoration. It's the invisible infrastructure that makes your prose easy to read.
Print and ebook formatting are meaningfully different disciplines. A print book is a fixed physical object with precise dimensions and unchanging page layouts. An ebook is reflowable text that adapts to every screen size, font preference, and accessibility setting the reader has. You need separate files and separate thinking for each.
Print Formatting: Getting the Basics Right
Trim size
The trim size is the physical dimensions of your printed book. The most common choices for fiction:
- 5.5" x 8.5" — the most common trade paperback size for genre fiction. Feels familiar, handles well, prints economically.
- 6" x 9" — slightly larger, common for non-fiction and literary fiction. Gives more text per page, reducing page count and print cost.
- 5.06" x 7.81" — a common mass market paperback size, good for genre fiction if you want that rack-sized feel.
Choose your trim size early — it determines everything else. Changing it later requires reformatting the entire file.
Margins
Margins serve two functions: they provide white space for readability and they account for the gutter (the inner margin where pages are bound). Insufficient gutter margins cause text to disappear into the spine. Standard recommendations for a 5.5" x 8.5" paperback:
- Outside margins: 0.5" minimum
- Top and bottom: 0.75"
- Gutter (inside margin): 0.75" to 0.875" for books under 300 pages; increase to 1" or more for thicker books
Body text typography
Serif fonts are the standard for print book body text. They're easier to read in long passages because the serifs guide the eye along the line. The safe, professional choices: Garamond, Minion Pro, Caslon, Palatino, or Times New Roman (though Times is considered slightly dated). Avoid decorative or sans-serif fonts for body text — they work for headings but fatigue readers in long passages.
Font size for body text typically ranges from 10.5 to 12 points depending on the font and your target audience. Leading (line spacing) should be roughly 120–140% of the font size. A 12pt font works well at 14–16pt leading. Many formatting tools handle this automatically — the key is to preview a printed proof before finalizing.
Chapter heading styles
Chapter openings establish tone. A bare chapter number in the same font as body text looks unfinished. A well-styled chapter heading might include the chapter number in small caps or a display font, an ornamental divider, and a chapter title if you use them. The chapter opening page typically begins approximately one-third to halfway down the page, not at the top. This is a small detail that immediately signals professional formatting.
Paragraph indents and spacing
The standard for fiction is first-line paragraph indent (typically 0.2"–0.35") with no extra space between paragraphs. Do not use both an indent and extra paragraph spacing — that's a Word-document habit that looks wrong in a printed book. The exception: the first paragraph of a chapter or section break has no indent. Many books use a small ornamental drop cap on the first letter of the first paragraph as well.
Front matter order
The front matter of a professionally formatted book follows a predictable order:
- Half-title page (title only, no subtitle or author name)
- Blank page (or series page, if applicable)
- Full title page (title, subtitle, author name, publisher imprint)
- Copyright page (copyright notice, ISBN, edition, permissions)
- Dedication (if any)
- Table of contents (if your book uses chapter titles)
- Epigraph (if any)
- Acknowledgments — many authors place these at the back
Ebook Formatting: Different Rules
Reflowable vs fixed-layout
Almost all fiction and most non-fiction ebooks should be reflowable — meaning the text adapts to whatever screen size, font, and text size the reader chooses. Fixed-layout ebooks (where each page looks exactly as designed, like a PDF) are appropriate for picture books, cookbooks, and heavily illustrated non-fiction, but they don't adapt to reading apps well and are poor accessibility.
What ebook formatting actually involves
A properly formatted ebook is an EPUB file — a zip archive containing HTML, CSS, and image files. Your cover must be embedded as the first image. The table of contents must be functional (clickable navigation). Paragraph styles must use proper CSS — not hard-coded formatting that won't adapt to reader preferences.
Things to get right:
- No hard page breaks except at chapter starts: Extra blank lines and manual spacing create formatting disasters on small screens.
- Paragraph styles, not direct formatting: Bold applied to a heading style is fine; bold applied character-by-character is fragile.
- Functional NCX/TOC: Every chapter should be navigable from the table of contents. Most reading apps display this.
- Cover image at 72 DPI is not enough: Ebook covers should be 2,500 pixels on the long edge minimum. KDP recommends 2,560 x 1,600 pixels for optimal display.
Formatting Tools: What to Use
Vellum (Mac only)
Vellum is widely considered the best consumer formatting tool available. It produces beautiful print and ebook files from a simple import process. The output looks professional out of the box — consistent chapter styling, proper widow/orphan control, clean ebook files. The cost is $199.99 for unlimited use (or $29.99 per book if you only format occasionally). The major limitation: it only runs on Mac. If you're on Windows, it's not an option.
Atticus (Windows and Mac)
Atticus is the Windows-compatible alternative to Vellum, designed by the team at Self-Publishing School. It handles both print and ebook formatting and produces clean output. It costs $147 for lifetime access. The interface is browser-based, so it works on any operating system. It's slightly less polished than Vellum in some print output details, but it's a genuine professional tool and the best option for Windows users who want a dedicated formatting application.
Scrivener
Scrivener can export to both EPUB and print-ready PDF, but producing professional output requires careful style configuration. It's excellent if you've already written your book in Scrivener and understand how to set up compile settings — but it has a learning curve. Many authors use Scrivener to write and then export to Vellum or Atticus for final formatting.
Microsoft Word
Word can produce ebook files (via the KDP Manuscript Converter or direct EPUB export) and print-ready PDFs. The results are workable but require more manual style management to look professional. Word's paragraph formatting, styles pane, and section break behavior are all prone to formatting gremlins that show up in the final output. If you use Word, invest time in understanding and using paragraph styles rather than direct formatting.
DIY vs Hiring a Formatter
Formatting is a learnable skill. If you're publishing multiple books in a series, learning a tool like Vellum or Atticus pays for itself quickly. For a first book, the time investment is real but finite — expect 4–8 hours to properly format a 70,000-word novel using a dedicated tool.
Professional formatters charge $50–$300 for a standard print and ebook package, depending on complexity. Illustrated books, complex layouts, or books with many special elements (tables, poetry, multiple languages) cost more. The case for hiring out: if your time is genuinely worth more than $50/hour, or if you've tried DIY formatting and the result looks wrong, paying a professional is the right call.
One rule that applies regardless of which path you choose: format from a clean, final manuscript. Every edit made after formatting potentially breaks your layout. Complete your editorial process — including proofreading — before you hand off the manuscript for formatting. Our editorial review service provides a final pass on prose, punctuation, and consistency so your formatting file is built on clean copy.