2026-07-15 · all guides

Word-to-Book Formatting Mistakes: 7 Ways Manuscripts Break in Print

Mistake 1: exporting at the wrong page size

A Word document defaults to 8.5 by 11 inch pages, but almost no trade book is printed at that size; typical nonfiction paperbacks are 6 by 9 inches, with 5 by 8 and 5.5 by 8.5 also common. Uploading a letter-size PDF to a 6 by 9 book either fails outright or gets scaled into something unreadable. Set the page size to your actual trim size in the page setup before you do any other formatting, because every margin and line break depends on it.

Choose trim size early for another reason: it drives page count, and page count drives printing cost and the required gutter. The same 40,000-word manuscript might make 210 pages at 6 by 9 and 260 at 5 by 8.

Mistakes 2 and 3: uniform margins and no gutter

Manuscript margins are uniform; book margins are mirrored, with a larger inside margin, the gutter, absorbing the binding. In Word this means switching the layout to mirror margins and setting the gutter for your page count. KDP requires an inside margin of 0.375 inches up to 150 pages, 0.5 inches for 151 to 300, 0.625 inches for 301 to 500, and 0.75 inches for 501 to 700, and it rejects files that violate the bracket.

The companion mistake is leaving the outside margins at the 0.25 inch legal minimum or, worse, at values designed for letter paper. Comfortable trade paperbacks run around 0.5 to 0.75 inches outside and 0.75 to 1 inch top and bottom. Set the margins, then recheck the page count, because widening margins can push you into the next gutter bracket.

Mistakes 4 and 5: formatting by hand instead of by style

The fourth mistake is mechanical: indenting paragraphs with the tab key or spaces, and creating vertical space with rows of empty returns. Both fall apart the moment anything reflows, and both poison ebook conversion, which turns tabs and empty paragraphs into random gaps. The fix is paragraph styles: a body style with a built-in first-line indent of about 0.3 inches, a chapter title style with built-in space before and after, and page breaks or section breaks, never stacked returns, to start chapters.

The fifth is styling headings visually, selecting text and making it big and bold, instead of applying real heading styles. Real styles buy you three things at once: a table of contents Word can generate and refresh automatically, working navigation when the file is converted to EPUB, and the ability to restyle every chapter title in one edit. A manuscript formatted with direct formatting cannot be maintained; one formatted with styles can.

Mistakes 6 and 7: stale TOCs and unembedded fonts

Mistake six is a hand-typed table of contents, or an automatic one nobody refreshed after final edits. Print TOC page numbers must match final pagination exactly, so the last action before export is always to update the TOC field and spot-check three entries against the actual pages. Mistake seven is invisible until upload: exporting a PDF without embedded fonts. KDP requires all fonts embedded in the interior PDF; use the PDF/A or standard export option in Word that embeds fonts and confirm in the file properties that every font says embedded.

Two bonus tells while you are checking: enable widow and orphan control on the body style so no single line strands at a page top or bottom, and switch the roman numeral front matter to arabic numbering at chapter 1 with a section break rather than numbering the title page as page 1.

The honest cost-benefit of doing this by hand

None of these fixes is hard individually, and a careful person with Word can absolutely produce a KDP-acceptable interior. The catch is that the mistakes interact: fixing margins changes the page count, which changes the gutter bracket and the TOC, and every late edit re-triggers the whole chain. Budget several focused hours the first time, and expect two or three rejected previews before it all passes.

The alternative is to not do layout in a word processor at all. ebookdone takes a topic and outline and outputs a print-ready PDF with the trim, mirrored gutters, styled headings, live TOC, and embedded fonts already correct, plus a matching EPUB, for 9 dollars a book. Whether you hand-build or generate, run the KDP previewer page by page before publishing; it is the final arbiter of every rule in this list.

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