Comparison

kdpbook.io vs Reedsy Studio: an honest comparison

Reedsy Studio (formerly Reedsy Book Editor) is free: you write or import a manuscript and it typesets a reflowable EPUB 3 and a print-ready PDF (PDF/X-1a) in 4 trim sizes with 3 themes. Its pages list no AI tools, and its guide says the print cover is a separate file. kdpbook.io writes or imports the book, offers 16 paperback trims and exports the full-wrap cover with the interior.

By kdpbook.io editorialUpdated October 15, 2026

We make kdpbook.io, so we’re not neutral. Everything about Reedsy Studio below comes from its public pages as of October 15, 2026 (each row links its source); prices and features may have changed since. Spot an error? Write to contact@thevibecodingagency.fr.

At a glance

kdpbook.io compared with Reedsy Studio
Criterion	kdpbook.io	Reedsy Studio
Main job	Writes and illustrates the book, or lays out your own manuscript, then builds the KDP files	Write and typeset a book you write yourself source: Reedsy Studio page for “Main job” (opens in a new tab)
AI	Writes, rewrites and illustrates when you ask; imported text is laid out word for word in 20 of the 36 book types	No AI tools listed; Reedsy says it will never use your work to train AI source: Reedsy Studio page for “AI” (opens in a new tab)
Your own manuscript	Import a .docx, .doc, .pdf, .txt or .md file (or paste the text) for 20 of the 36 book types; your words are laid out as written, never rewritten	Write in Studio or import a draft from “any major text format” source: Reedsy Studio page for “Your own manuscript” (opens in a new tab)
Print interior	Trim, bleed, margins, spine and page limits applied automatically, with a preflight check	Print-ready PDF (PDF/X-1a:2001, CMYK images), typeset automatically with 3 themes source: Reedsy Studio page for “Print interior” (opens in a new tab)
Trim sizes	16 standard paperback trims (no custom sizes); 5 hardcover trims; novels: 5.5 × 8.5, 5 × 8, 5.25 × 8, 5.06 × 7.81, 6 × 9, 6.14 × 9.21 in	4 trims: Trade 6 × 9 in, Digest 5.5 × 8.5 in, Reedsy standard 5 × 8 in, Pocket 4.25 × 6.87 in source: Reedsy Studio page for “Trim sizes” (opens in a new tab)
Images	Full-bleed art where the book type uses it, sized to KDP's interior rule (0.125 in on the top, bottom and outside edge)	Every image is sized the same way automatically and can't be adjusted; full-bleed pages not documented source: Reedsy Studio page for “Images” (opens in a new tab)
Cover	Full-wrap cover PDF sized from trim, paper and final page count	Front cover image for the ebook; its guide says the print jacket is a separate PDF and suggests a designer from its marketplace source: Reedsy Studio page for “Cover” (opens in a new tab)
Kindle eBook	Kindle EPUB (reflowable or fixed layout) + Kindle cover	Reflowable EPUB 3; fixed layout not documented source: Reedsy Studio page for “Kindle eBook” (opens in a new tab)
Hardcover	5 hardcover trims	Not documented source: Reedsy Studio page for “Hardcover” (opens in a new tab)
Platforms	Web app in the browser	Web app in the browser; offline use is on its roadmap, per its FAQ source: Reedsy Studio page for “Platforms” (opens in a new tab)
Pricing	Free: 2,000 credits once, no card. Plans $25–$99/month	Free; optional add-ons at $4.99 and $7.99/month source: Reedsy Studio page for “Pricing” (opens in a new tab)

What Reedsy Studio is

A browser-based writing and formatting app from Reedsy, the marketplace of freelance editors and designers. You write in its editor or import a draft, plan on Boards (notes, characters, locations), collaborate in real time with track changes and comments, and share read-only previews with beta readers. Studio typesets as you write: it adds the copyright page and table of contents, lets you choose how chapters open, and exports a reflowable EPUB 3 or a print-ready PDF in 4 trims (Trade 6 × 9 in, Digest 5.5 × 8.5 in, Reedsy standard 5 × 8 in, Pocket 4.25 × 6.87 in), with a Reedsy, Classic or Romance theme.

Where it shines

Free writing and formatting with unlimited books, and Reedsy says it will never use your work to train AI.
Clean, conventional typesetting with no setup: automatic copyright page and table of contents, chapter openers with numbers, titles, drop caps or images, and notes set as footnotes in print and chapter-end notes in the ebook.
Real-time collaboration with track changes and comments, and read-only previews for beta readers.
A print-ready PDF (PDF/X-1a:2001 with CMYK images) and an EPUB 3, which its guide calls compatible with most print-on-demand services, KDP Print and IngramSpark included.
Reedsy's marketplace of professional editors and cover designers, when you want to hire one.

Reedsy Studio pricing

Free: writing, formatting, manuscript import, PDF and EPUB export, unlimited books and devices.
Optional add-ons: Craft $4.99/month (unlimited history, advanced stats, custom goals, daily check-ins, dark mode) and Outlining $7.99/month (unlimited Boards and notes, writing templates), with 10% off annual billing; its Studio page still calls the first one Studio Essential.
A 30-day free trial of the add-ons, no card.

As published on October 15, 2026. See the current prices on its website.

Which one should you choose?

Choose Reedsy Studio if…

You're writing a novel or non-fiction book yourself and want free, clean typesetting.
You work with an editor or co-author and want track changes in the same app.
Your book is text-first, fits one of its 4 trims and has no full-bleed images.

Choose kdpbook.io if…

You want the book written or illustrated, or art on every page: picture books, comics, cookbooks, coloring books.
You need a trim outside its 4 sizes, a hardcover edition or images that run to the edge of the page.
You want the full-wrap paperback cover built from the final page count, with the interior.
You want a fixed-layout Kindle edition for an illustrated book.

Questions

Is Reedsy Studio the same as Reedsy Book Editor?

Yes. Reedsy launched its Book Editor in 2016 and renamed the app Reedsy Studio in June 2025, adding planning boards, writing goals and book sharing, as Good e-Reader reported on June 30, 2025. Its FAQ still sends you to editor.reedsy.com to use it, and writing, formatting and export stay free.

Is Reedsy Studio really free?

Yes. Writing, formatting, import and PDF and EPUB export are free, with unlimited books; Reedsy sells optional add-ons for writing stats and outlining ($4.99 and $7.99 a month). kdpbook.io works on credits because it generates text and art: 2,000 free credits once, no card, then paid plans from $25/month. Importing your own manuscript costs 3 credits per 1,000 words to read it, and the book's estimate (plan, layout, cover art) is shown before you launch.

Does Reedsy Studio make KDP paperback covers?

No. Its formatting guide says print-on-demand services need a full-jacket PDF separate from the interior and suggests hiring a designer from its marketplace; the cover you add in Studio is for the ebook. The full wrap depends on the page count: a 200-page 6 × 9 in book on white paper has a 0.45 in spine and a 12.7 × 9.25 in cover file. kdpbook.io computes the spine from the page count and paper and exports the cover PDF with the interior.

Which trim sizes does Reedsy Studio offer?

Reedsy Studio lists 4 print trims: Trade 6 × 9 in, Digest 5.5 × 8.5 in, Reedsy standard 5 × 8 in, Pocket 4.25 × 6.87 in. Pocket isn't a KDP standard trim, but it fits KDP's custom range (4–8.5 in wide, 6–11.69 in tall); the other 3 are KDP standard paperback trims. kdpbook.io offers KDP's 16 standard paperback trims (no custom sizes) and 5 hardcover trims, including square and large formats for illustrated and activity books.

Sources · read on October 15, 2026

We re-read every comparison at least every 90 days. Spot an error? Write to contact@thevibecodingagency.fr.

Make it with kdpbook

Try it on your own book.

Describe a book in one sentence and see its plan and credit estimate before you launch anything.

Start free KDP formatting

2,000 free credits · no card required