How to Format a Book in Atticus for KDP and Ebook (2026)

Most formatting software forces a trade-off. Vellum makes beautiful books but runs only on a Mac. Word runs everywhere but leaves formatting to the author by hand. Scrivener helps authors write, but its compile settings can feel like a second job. Atticus sits in the middle: it works on Windows, Mac, Linux, and Chromebook, with ready-made themes and exports for ebook and print.

That promise matters most to authors who do not own a Mac, or who publish several books a year and need a repeatable process. If you format a book in Atticus, you work in a browser-based editor, choose a theme, preview the result on different devices, and export an EPUB for ebook retailers and a PDF for print. You do not need to learn typesetting, and you do not need to buy a second computer to get a professional-looking interior.

This guide explains how to format a book in Atticus for KDP and ebook: who it suits, what it costs, how to import, theme, and export a manuscript, and where it reaches its limits. It compares Atticus with Vellum, Kindle Create, Word, and Scrivener, so you can decide whether it fits your next book or a human formatter would serve you better.

Who Atticus Suits and Who Should Look Elsewhere

Atticus suits indie authors who publish more than one book and want a consistent, professional interior without hiring a formatter for every title. It suits Windows and Linux authors especially, because the main alternative built specifically for authors, Vellum, is Mac-only. It also suits authors who like visual control: you see the chapter theme, drop cap, and page break as you work, rather than imagining how code or compile settings will look later. For a straightforward novel, memoir, or nonfiction book, that visual workflow is usually faster than wrestling with styles in a word processor. One Atticus project can produce both an EPUB and a print PDF, with separate adjustments where needed, so a correction is made once, not twice.

Atticus is weaker for image-heavy books, such as picture books, photography books, and complex textbooks, because a theme-based tool cannot match a page-by-page layout; test those carefully. Authors needing tracked changes, comments, and editor collaboration will also find it plain: it has no grammar checker, and collaboration works best when the other person also has Atticus. For a highly custom interior or a single book to be perfected once, a professional formatter may cost less in time than learning any software.

Price, Platforms, and What You Get for $147

Atticus costs $147 as a one-time payment, with lifetime updates, no monthly fee, and no per-book charge. You can format unlimited books, which appeals to prolific authors: the tenth book costs nothing extra in software. Reviews in 2026 report the same $147 figure, with a 30-day money-back guarantee, but check the current terms at checkout, because prices can change.

Atticus was launched in 2021 by Dave Chesson, founder of Kindlepreneur, as a cross-platform alternative to Vellum. It is browser-based with limited offline functionality. That reach is its main advantage over Vellum, which costs $249.99 for ebook and print and runs on Mac only. If you own a Mac and love Vellum, Atticus may not tempt you; if you do not, it removes the need to borrow a Mac or hand the job to someone else. That payment covers themes and a custom theme builder, front and back matter templates, device preview, and EPUB, PDF, and DOCX exports, with automatic cloud backup and no export limit.

Import Your Manuscript and Check the Chapter Structure

Start with the cleanest manuscript you can produce. Finish and edit the book in your usual tool, save it as DOCX, remove tracked changes, and strip out manual tricks such as extra blank lines, tab indents, and chapter titles centred with spaces. A clean DOCX with real heading styles imports far more reliably than a document that only looks right because of manual spacing.

Atticus imports DOCX files and tries to recognise chapters from the heading structure. That recognition is not perfect. Reviews report that file imports can lose chapter structure, so the first job after import is to check every chapter, not to start styling. Scroll through the chapter list, confirm that each chapter begins where it should, and check that front matter, such as the copyright page and dedication, and back matter, such as the about the author page, landed in the right places. Fix any merged or split chapters now, while the manuscript is still easy to repair, rather than discovering the problem in a print proof. Also check for lost italics, broken dashes, and merged paragraphs. The editor is plain, with no spell check, so proofread before import and keep editing in an editing tool. Save a backup DOCX before applying themes.

Choose a Theme and Shape the Interior

Themes are the heart of Atticus. A theme controls the chapter heading style, the first-paragraph treatment, drop caps, ornamental breaks, fonts, and spacing, so choosing a theme is choosing the personality of the book. Atticus lists 17 templates on its own site, with more than 1,200 unique combinations when fonts and settings are varied, plus a custom theme builder for authors who want to adjust a theme and reuse it across a series. Do not chase a theme count from a review; check the current templates in the tool, because the number changes as new themes are added.

Choose a theme that fits the genre and the reader, not the theme that looks most decorative on screen. A romance novel, a thriller, and a business book should not look the same, and a theme with heavy ornaments can distract from a serious nonfiction text. Preview the theme with your own first chapter, not only with the sample text, because your chapter lengths, dialogue, and scene breaks will reveal whether the theme handles your book well. Check the chapter opening, a dialogue-heavy page, and a page with a scene break, and read them as a reader would, not as a designer admiring a heading. Use its callout boxes, decorative breaks, and text-message formatting sparingly and consistently, and reuse the same custom theme across a series. If a theme needs heavy adjustment, it may be the wrong theme, or the book may need a custom layout.

Set Up Print for KDP: Trim Size, Margins, and Bleed

Print setup is where a formatting tool earns its keep, and it is also where mistakes are most expensive, because a print proof reveals them only after the file is exported. In Atticus, create or duplicate the project for print, choose the trim size, and check the margins and gutter for that size and page count. Atticus shows which trim sizes are supported by the two biggest print-on-demand services, Amazon KDP and IngramSpark, which helps avoid choosing a size that one service cannot print. Pick the trim size from KDP’s list, not from habit, and keep it consistent with the cover file, which is built to the same dimensions.

Margins and gutter need the same care: the gutter, the inner margin beside the binding, must keep text clear of the spine, especially in a thick book. Atticus calculates margins, gutter widths, and widow and orphan control from the trim size and page count, but still preview the print PDF page by page, checking chapter openings, paragraphs breaking across pages, and text too close to the binding. Test full-bleed images, which Atticus supports, in preview and proof, keeping important content away from the trim edge, or a white border will appear after trimming.

Export for Ebook and Print, Then Proof Both

Export is the moment when the two formats separate. For ebook, export an EPUB and preview it on the devices Atticus offers, including a Kindle, a tablet, and a phone-sized screen. Ebook text reflows, so check that chapter headings, scene breaks, drop caps, and callout boxes still read well at different font sizes, and that the table of contents links to the right chapters. A theme that looks perfect at one size can break at a larger size, with a heading orphaned or a callout box splitting awkwardly. Fix those issues in the theme or the text, not by adding manual spacing that will behave differently on every device.

For print, export the PDF and check it as a finished book. Confirm trim size, margins, and bleed match your KDP setup, upload it with the matching cover, check the Print Previewer, and order a printed proof before publishing. A proof reveals show-through, gutter problems, and image quality in a way no preview can. Do not publish from a screen preview alone. Fix any correction in the Atticus project and re-export both formats, keeping it as the single source of truth; duplicate the project for print-only adjustments.

• Start from a clean, fully edited DOCX with real heading styles and no tracked changes.
• Check every chapter after import, because imports can lose chapter structure.
• Choose a theme that fits the genre, preview it with your own chapters, and reuse it across a series.
• Set trim size, margins, and gutter for KDP print, and test full-bleed images in preview and proof.
• Export EPUB for ebook and PDF for print, preview both, and order a printed proof before publishing.
• Fix corrections in the Atticus project and re-export both formats, keeping one source of truth.

Atticus Versus Vellum, Kindle Create, Word, and Scrivener

The fairest comparison starts with what each tool is for. Vellum is the polished Mac-only standard for author formatting, with beautiful themes and a refined preview, at $249.99 for ebook and print. Atticus is the cross-platform challenger at $147, with a broader set of decoration tools and a custom theme builder, but a plainer editor and a younger feature set. If you own a Mac and format only ebooks and print interiors, Vellum remains hard to beat. If you use Windows or Linux, or you want the same tool on every machine you own, Atticus is the practical choice, and the saving is real.

Kindle Create is the free Amazon tool for formatting ebooks and, for some books, print files, and it is worth comparing before you spend $147. See our Kindle Create formatting guide for the full guide, and our Kindle Create versus Vellum comparison for the head-to-head comparison with Vellum. Kindle Create is strong for straightforward KDP-only books, especially when cost is the main concern, but it ties you to Amazon’s workflow and offers less control over themes and print details than Atticus. Atticus suits authors who publish beyond Amazon, who want more theme control, or who want one project for KDP, IngramSpark, and other retailers.

Word and Scrivener solve different problems. See our guide to formatting a book in Microsoft Word for KDP for formatting a book in Word for KDP, which gives complete manual control but demands that you build styles, headings, and page setup yourself. See our guide to formatting a book with Scrivener for the Scrivener workflow, which is excellent for writing and organising a long manuscript but requires careful compile settings to produce a clean ebook or print file. Atticus sits between those tools and a human formatter: less control than Word, less writing power than Scrivener, but a faster path from finished manuscript to publishable EPUB and PDF.

Conclusion: A Practical Tool for Prolific Indie Authors

Atticus earns its place for authors who publish regularly, do not use a Mac, and want a repeatable path from manuscript to EPUB and print PDF. It is not the most powerful writing tool, it is not the most customisable layout tool, and it is not a replacement for editing. Within those limits, it does its job well: clean imports from a well-prepared DOCX, themes that look professional without typesetting knowledge, print settings that respect KDP and IngramSpark trim sizes, and exports that preview honestly before you publish.

Buy it for the workflow, not for a perfect book with one click. Prepare the manuscript, check chapters after import, choose a fitting theme, set print size and margins with care, and proof both formats. If your book needs a custom interior or complex tables, test a sample chapter first, or hire a formatter. For a straightforward novel, memoir, or nonfiction book, Atticus can turn formatting into a manageable afternoon.