Professional interior formatting without touching a page-layout tool — themes, typography, and trim size, all with a live preview as you go.
The Design tab is where your manuscript turns into the interior of an actual book — trim size, margins, typography, chapter openers, page numbers, and more. Every change previews instantly on the right, and every change saves automatically, exactly like your writing does.
Start from a professionally designed theme and adjust from there, rather than building a look from scratch. Switching themes updates your whole book's typography and chapter-opener style in one click — nothing you've written changes, only how it's presented.
Choose how each chapter begins (a chapter-style opener design), how chapters are numbered (e.g. "Chapter One" vs. "1"), and whether a chapter always starts on a fresh page, a new right-hand page, or continues naturally from the previous one.
Fine-tune font size, line height, and paragraph spacing across the whole book, plus the spacing around opening quotes specifically. Chapter titles and subtitles have their own size, case (e.g. small caps or uppercase), color, and emphasis style — set independently from your book's own title page, so styling one never accidentally changes the other.
Set where page numbers appear (top or bottom, left/center/right) and turn on running headers with separate content and alignment for left-hand and right-hand pages — a common touch in printed books that's easy to miss doing by hand.
Pick a standard print trim size (or set a custom one) and adjust your top, bottom, inner, and outer margins — inner margins can be set slightly wider to account for the binding, so text never crowds the spine.
Choose whether your auto-generated Table of Contents lists chapters by their title, their standard section label, or both.
The preview pane on the right reflects every setting immediately, and can be viewed at different zoom levels and device sizes so you can check how a page actually looks before exporting.
Once a book's formatting looks right, save it as a named template from the Design tab. Applying that template to a different project instantly matches its formatting — ideal for a series, or simply for reusing a look you like across every book you write, without redoing every setting by hand each time.