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Lacuna Book Formatter

Creating stunning books, on Windows and Mac, has never been easier!

New to the app? Start with the getting started overview for a tour of the interface and a recommended first-book workflow. These docs cover Lacuna for Windows and Mac — every feature works on both platforms.

Next steps

Import Your Manuscript

Transform your manuscript (DOCX) into a structured book project with automatic section splitting and formatting. Learn how to import →

Overview of Book Sections

Discover the different section types available and how they help structure your book. Explore sections →

Choose Your Style

Apply professionally designed styles to give your book a polished, publication-ready appearance. Browse styles →

Export Your EPUB

Generate industry-standard EPUB files that meet all publishing requirements for major distribution platforms. Start exporting →

Pricing & Plans

Compare Lacuna pricing and plans for the trial, lifetime license, and team options before you upgrade.