The Best Book Formatting Software in 2026: A Complete Comparison Guide

Ask ten self-published authors what formatting tool they use, and you'll likely get more than ten answers, often because authors use different tools for different stages: one for drafting, another for design, sometimes a third for distribution. There isn't a single "best" tool so much as a best fit for your manuscript, your operating system, your budget, and how much of the process you want handled in one place.

This guide brings together the major options, dedicated formatting tools, all-in-one workspaces, free distributor-linked tools, drafting software, and professional design tools, into one comparison, with links to deeper dives on each.

Quick answer

If you want one tool that covers writing, critique, design, and export without per-format purchases or a subscription, LiberScript is built for that. If you have a more specific need, a Mac-only beautiful ebook (Vellum), a one-time-purchase drafting tool (Scrivener), or free formatting tied to a specific platform (Kindle Create, Reedsy Book Editor, Draft2Digital), the sections below help you match the tool to that need.

At a glance: every tool compared

Dedicated formatting tools: Atticus, Vellum, and Kindle Create

These three tools share a common shape: you bring a finished manuscript, and the tool focuses on turning it into a formatted ebook (and often print) file, without attempting to be a writing or revision tool.

Atticus runs in the browser on any operating system and is sold as a one-time purchase, making it a popular cross-platform alternative for authors who want Vellum-style formatting without a Mac. Our full Atticus comparison covers the differences in more depth, including import formats, themes, and export options.

Vellum produces some of the most polished ebook themes available, but only runs on macOS, with pricing structured as a one-time purchase per output tier (ebook, or ebook plus print). For Mac-based authors focused on ebook design, it remains a strong option; the Vellum comparison covers the platform tradeoff and pricing model in detail.

Kindle Create is Amazon's free, KDP-specific formatting tool. It produces a proprietary .kpf file for ebooks and a print PDF for KDP Print, both tied specifically to Amazon's pipeline. It's a reasonable choice if you're certain you'll only ever publish through KDP; the Kindle Create comparison covers what happens if you later want to go wide.

All-in-one workspace: LiberScript

LiberScript's approach differs from the dedicated formatting tools above by covering more of the process in one project: writing and revision, a structural critique of the whole manuscript (passive voice, filler words, repetition, pacing, with a readiness score), design with genre-matched themes and typography controls, and export to EPUB, print PDF, DOCX, and a cover PDF.

It's sold as fixed-price passes, a day, a week, a month, or a year, with no auto-renewal and no per-format purchases. The Atticus comparison is the most direct head-to-head, since both tools cover similar ground for cross-platform formatting, with LiberScript adding the critique engine and a wider export set.

Free tools with a different business model: Reedsy Book Editor and Draft2Digital

Two of the most recommended "free" tools aren't free in the sense of being unconditionally given away; they're free because the company makes money elsewhere.

Reedsy Book Editor is free because Reedsy's main business is its marketplace of freelance editors, designers, and other professionals. The editor itself produces clean EPUB, MOBI, and print PDF files using a small set of simple templates. Our Reedsy comparison covers what the free tool includes and doesn't, and how it relates to the marketplace.

Draft2Digital's formatting tool is free because D2D's business is distribution, and it earns a commission on sales made through its network. The formatting tool converts a manuscript to EPUB as part of getting it into distribution, with print formatting tied to D2D's Ingram-based print-on-demand. The Draft2Digital comparison covers the commission model and how it compares to a one-time or pass-based cost over a book's lifetime.

Both are worth considering if your manuscript is simple and you're already using (or planning to use) the associated platform.

Drafting and organization: Scrivener

Scrivener isn't really in the same category as the other tools here, it's a writing and organization tool, not primarily a formatting tool, though its Compile feature can produce EPUB, MOBI, PDF, and DOCX output. For authors with long, complex manuscripts (multiple POV characters, extensive research, nonlinear structure), Scrivener's binder, corkboard, and outliner remain some of the best tools available for the drafting stage.

The Scrivener comparison covers a common pattern: draft and organize in Scrivener, then move to a dedicated formatting tool, including LiberScript, for the design and export stage, since Scrivener's Compile feature has a well-documented learning curve for producing polished output.

Professional design tools: Affinity Publisher and Adobe InDesign

For interiors that need to go beyond standard book typography, illustrated books, art books, complex textbooks with heavy figure placement, professional page layout software remains the most capable option. Affinity Publisher (a one-time purchase) and Adobe InDesign (a Creative Cloud subscription) offer near-total control over every element on the page, at the cost of a learning curve built for general layout work rather than books specifically.

The Affinity Publisher and InDesign comparison covers where these tools clearly lead (highly custom layouts) and where a book-specific tool like LiberScript can save significant setup time for standard fiction and nonfiction.

Recommendations by situation

If you'd rather start from your own situation than work through every feature, here's a quick mapping:

Cost shape over time

Beyond the sticker price, it helps to think about how each tool's cost behaves over the life of your publishing career, not just your first book:

None of these is universally "cheapest", it depends on how many books you publish, how often, and whether you value owning a license outright versus paying only when you're actively working on a book.

How to choose: a quick decision framework

A few questions can narrow the field quickly:

• Do you need a critique of your manuscript, not just formatting? Only LiberScript, among the tools above, includes a built-in critique engine as part of the same workspace.
• What operating system are you on, and does that matter for your tool? Vellum is macOS-only; Atticus, Reedsy Book Editor, Draft2Digital's tool, and LiberScript run in the browser on any OS; Scrivener supports Windows, macOS, and iOS; Kindle Create supports Windows and macOS.
• Will you publish on Amazon KDP only, or go wide? Kindle Create's output is KDP-specific; the other tools produce portable EPUB and print PDF files usable across retailers and distributors.
• Is your manuscript still being drafted, or is it largely finished? If you're still organizing a complex draft, Scrivener's planning tools are valuable regardless of which formatting tool you use afterward.
• Does your interior need highly custom or illustrated design? If so, Affinity Publisher or InDesign, likely with a professional designer, is the right choice; the other tools (including LiberScript) are built around standard book typography rather than fully custom layouts.
• What's your budget, and how does it scale? One-time purchases (Atticus, Vellum, Scrivener, Affinity Publisher) cost more upfront but nothing more later; free tools (Reedsy Book Editor, Kindle Create) cost nothing upfront but may come with marketplace prompts or platform lock-in; D2D's tool is free but tied to an ongoing sales commission; LiberScript's passes are priced per period of use, with no ongoing cost between projects.

Frequently asked questions

Do I need to pick just one tool?

No, and most authors don't. A common pattern is to draft in one tool (often Scrivener), format and critique in another (LiberScript or a dedicated formatting tool), and distribute through one or more platforms (which may include their own free formatting tools, like D2D's or Kindle Create's).

Which of these tools is genuinely free with no catch?

The Reedsy Book Editor and Kindle Create are free to use without a sales commission, though Reedsy's broader business depends on its marketplace and Kindle Create's output is tied specifically to KDP. Draft2Digital's formatting tool is free upfront but tied to a commission on sales through its network.

Which tool is best for a first-time author with a simple manuscript and no budget?

The Reedsy Book Editor or Kindle Create (if you're certain about KDP-only) are reasonable zero-cost starting points for a simple manuscript. If you can stretch to a single Day pass, LiberScript's critique engine can help catch issues before you publish, which often has more long-term value than the cost of the pass.

Which tool is best if I'm publishing several books a year?

This depends more on your workflow than any single tool. If you're comfortable with Scrivener's Compile and don't need a critique pass, its one-time price scales well across many books. If you want critique and design handled consistently across books without configuring Compile each time, LiberScript's Year pass is priced for repeated use across a year of projects.

Is LiberScript trying to replace all of these tools?

Not exactly. LiberScript is built to cover writing, critique, design, and export in one project, which overlaps with several of the tools above. It doesn't replace Scrivener's deep organizational tools for complex drafts, or Affinity Publisher and InDesign for highly custom illustrated layouts, or a distribution platform's actual distribution network. For the common case, a manuscript that's substantially written and needs critique, design, and export, it aims to cover that in one place.

Which tools work on Windows?

Scrivener (Windows desktop), Atticus (browser), Reedsy Book Editor (browser), Draft2Digital's formatting tool (browser), Kindle Create (Windows desktop), LiberScript (browser), and Adobe InDesign (Windows desktop via subscription) all work on Windows. Vellum is macOS-only. Affinity Publisher has Windows and macOS versions.

What's the difference between an EPUB and a KPF file?

EPUB is a standard ebook format accepted by every major retailer: Apple Books, Kobo, Barnes & Noble, Amazon KDP (which now accepts EPUB directly for most books), IngramSpark, and Draft2Digital. KPF is Amazon's proprietary Kindle package format, produced by Kindle Create. It can only be uploaded to Amazon KDP, not to other platforms. For wide distribution, starting with a standard EPUB is the more portable choice.

Should I focus on one retailer or go wide from the start?

There's no universal answer. KDP Select (Amazon-exclusive) offers promotional tools but prevents you from selling on other platforms. Going wide from day one gives you more flexibility but more distribution to manage. The relevant formatting note is that if you go wide later, you'll need EPUB and print PDF files for other platforms regardless of which tool you used for KDP; starting with a portable format avoids reformatting later.

The bottom line

There's no single best book formatting software for every author; there's a best fit for your manuscript, your operating system, your budget, and how much of the process you want handled together. If you want one workspace for writing, critique, design, and export without per-format purchases, LiberScript is built for exactly that. If your needs are more specific, Mac-only polish, one-time-purchase drafting, or free formatting tied to a particular platform, the comparisons linked above go into the details for each.

The comparison guides linked throughout this article go deeper on each individual pairing, with feature tables, pricing details, and workflow examples drawn from each tool's actual strengths. The comparisons to Atticus, Vellum, and Scrivener are good starting points if you're deciding between those specific options.

Want to see how your manuscript looks with a structural critique and a designed interior? Get started or see pricing for all plans.