Comparison

Best Online Book Formatting Tools

If you want to format a book without installing anything, four tools do the whole job in a browser. Atticus ($147 one-time) is the most complete: it writes and formats, runs on any operating system, and covers unlimited books. Reedsy Studio and Draft2Digital are free and produce respectable EPUB and print files from a handful of templates. Ceeryo is priced per book and typesets a text-led manuscript into a preflight-checked KDP interior in minutes. Vellum, the usual benchmark, is not on this list because it is a Mac desktop application.

Last updated: October 15, 2026 · Prices checked on this date and do change

"Online" matters for two reasons. The first is platform: Vellum runs only on macOS, so anyone on Windows, Linux or a Chromebook needs a browser tool or a different desktop app. The second is commitment: a browser tool asks for a manuscript and gives back files, with no project format to learn and nothing to uninstall when the book is done. The trade is control. None of these tools lets you nudge a running head by half a point the way a page-layout application does. For a novel, memoir or plain nonfiction book that is rarely the right trade to want anyway. The four below were checked on the date shown; each one's prices and limits are listed as they stood then.

At a glance

Tool	Price	Platforms	Best for
Atticus	$147 one-time	Browser-based — Windows, macOS, Linux, Chromebook	Authors on any platform who want writing and formatting in one place
Reedsy Studio	Free	Browser	A first book on no budget that needs to look respectable
Draft2Digital	Free (the company earns a share when you distribute through it)	Browser	Authors who will distribute wide anyway and want ebook and print files from the same upload
Ceeryoours	Per book	Browser — any operating system	One or two books, formatted in minutes, on a machine that cannot run Vellum

Tool by tool, including where each one stops

Atticus

$147 one-time · Browser-based — Windows, macOS, Linux, Chromebook

Best for: Authors on any platform who want writing and formatting in one place

Strengths

Runs anywhere with a browser, which is the direct answer to Vellum's platform lock.
Combines drafting and formatting, so the manuscript never leaves the tool.
One payment covers unlimited books and includes future updates.

Where it stops

Output is very good but not consistently at Vellum's level on fine typographic detail.
Still a real application to learn, with a dashboard, settings and its own conventions.
Being browser-first, it is less comfortable if you work offline for long stretches.

Reedsy Studio

Free · Browser

Best for: A first book on no budget that needs to look respectable

Strengths

Genuinely free for both EPUB and print PDF, with no watermark or export fee.
Very short learning curve — a handful of clean templates and little to configure.
Backed by a large editorial marketplace, so it is well maintained.

Where it stops

Almost no design control: you take one of the supplied looks or you do not.
Weak on anything structurally unusual — heavy tables, images, or complex back matter.
Your manuscript lives on their platform, which some authors will not accept.

Draft2Digital

Free (the company earns a share when you distribute through it) · Browser

Best for: Authors who will distribute wide anyway and want ebook and print files from the same upload

Strengths

Free EPUB and print-ready PDF from a Word upload, with a set of clean interior templates.
You can download the formatted files whether or not you publish through Draft2Digital.
The upload-and-pick-a-template flow is about as short as this job gets.

Where it stops

Template choice is narrow and there is little to adjust once a template is chosen.
The tool exists to feed its own distribution service, so the print side is built around standard trade trims rather than anything unusual.
No preflight report: you find out about margin or page-count problems from the printer, not before.

Ceeryo

our toolPer book · Browser — any operating system

Best for: One or two books, formatted in minutes, on a machine that cannot run Vellum

Strengths

Nothing to install or learn: upload the manuscript, choose a theme, download a print PDF and EPUB.
Priced per book, so a single title costs a fraction of a perpetual licence.
Print output is preflight-checked against print-on-demand trim, margin and gutter rules.

Where it stops

Designed themes only — there is no interactive styling and no live preview while you edit.
Pictures and tables are set inside the text, never across a spread or to the page edge: the wrong tool for photo books, comics or anything designed page by page.
If you publish many books a year, a one-time licence will cost less over time than paying per title.

Which one, for your situation

You will publish several books and want one tool for writing and formatting

Atticus

One payment, unlimited books, runs in any browser, and the manuscript never has to leave it.

You want it free and will distribute wide

Draft2Digital or Reedsy Studio

Both produce clean files from a Word upload at no cost. Draft2Digital if you are using its distribution anyway; Reedsy if you want slightly more template choice.

You have one text-led book and want a checked KDP interior today

Ceeryo

Upload, choose a theme, download a print PDF that has already been checked against KDP trim, margin and gutter rules, plus an EPUB. Not for image-led books, and not the cheapest route if you publish often.

Your book is built around photographs, recipes or diagrams

None of these

Every tool on this page is text-first. Image-led books need a page-layout application such as Affinity Publisher or a human designer.

What is the best online book formatting tool?

Atticus ($147 one-time) is the most capable browser-based book formatter: it runs on any operating system, produces print PDF and EPUB, and includes writing tools. Reedsy Studio and Draft2Digital are the best free options. Ceeryo is a per-book alternative that typesets a Word manuscript into a preflight-checked KDP interior without any setup. Vellum is desktop-only, so it is not an online option.

Frequently asked questions

Can I format a book entirely online, with nothing installed?+

Yes. Atticus, Reedsy Studio, Draft2Digital and Ceeryo all run in a browser and output both a print-ready PDF and an EPUB. You upload a Word manuscript, choose a design, and download the files. The only desktop requirement is a browser.

Is Vellum available online?+

No. Vellum is a macOS application with no browser version and no Windows version. The tools on this page are what people use when they want Vellum-style results without a Mac.

Are the free online formatters good enough for KDP?+

For a text-led novel or memoir, yes. Reedsy Studio and Draft2Digital both produce interiors that pass KDP's checks for standard trim sizes. What they do not do is tell you in advance when a margin or gutter is going to be rejected; a tool with a preflight report saves a round trip through KDP's previewer.

Will my manuscript be stored on someone else's server?+

With every browser tool, the manuscript is processed on the vendor's server at least while the files are made. Read each tool's retention policy if that matters to you: some keep the project indefinitely as the working copy, others delete it after a set period.

Ceeryo is on this list — how impartial is it?+

Not entirely, and you should read it knowing that. What we can commit to is that every entry states where it beats us, that we do not name ourselves as the pick for jobs we do badly — image-led books and high-volume authors are both listed as reasons to choose something else — and that prices and platform facts are checked on the date shown at the top. Compare it against a source with nothing to sell before you spend money.

Other comparisons

Best Book Formatting Software in 2026 Best Book Formatting Software for Windows Best Book Formatting Software for KDP Vellum Alternatives for Windows Vellum vs Atticus Free Book Formatting Software

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