Correct gutter by page count
Inside margin scales with length — 0.375″ under 150 pages, up to 0.875″ past 700 — so text never disappears into the spine.
For self-publishing authors
Upload a Word doc. Get back a print-ready interior PDF and a reflowable EPUB — the exact files Amazon KDP asks for.
The page on the right is a real, unedited render from this tool — not a mockup. Open the full PDF.
Three steps
No design software, no template wrangling, no formatter to hire.
A Word .docx or plain .txt. We read your chapter headings and paragraphs — no special formatting required on your end.
6×9 is the paperback standard; 5×8, 5.5×8.5, 7×10 and 8.5×11 are ready too. We handle the margins and gutter for you.
A KDP-ready print interior PDF and a reflowable EPUB. Upload them straight to Amazon KDP.
What the formatter does
These are the things that get a manuscript rejected or sent back. We get them right up front.
Inside margin scales with length — 0.375″ under 150 pages, up to 0.875″ past 700 — so text never disappears into the spine.
A comfortable cushion above KDP's 0.25″ no-bleed minimum, verified page-by-page with a pixel-level border check.
Author on the left page, title on the right, page numbers centered — mirrored recto/verso, the way books are set.
Each chapter opens on a fresh page with a dropped heading. Fonts are subset and embedded so KDP never flags them.
Margin and trim specs follow Amazon KDP's official Trim Size, Bleed & Margins guidance.
Good to know
It's a one-time $29 per book — no subscription. For comparison, Atticus is $147, Vellum is $199.99, and freelance formatters typically charge $100–200. There's no free trial, but there is a 7-day money-back guarantee.
You upload a Word (.docx) or plain-text manuscript. The formatter reads your chapter headings and paragraphs, then produces a print-ready interior PDF at your chosen trim size plus a reflowable EPUB 3 with a table of contents — the exact files Amazon KDP requires.
Yes. It sets the inside (gutter) margin by page count per KDP's official spec (0.375″ under 150 pages, scaling to 0.875″ past 700), keeps all ink outside the 0.25″ no-bleed minimum verified page-by-page, and subsets and embeds fonts so you don't get a "fonts not embedded" warning.
6×9 by default, plus 5×8, 5.25×8, 5.5×8.5, 7×10 and 8.5×11.
No. You upload a .docx or .txt file and download the finished print PDF and EPUB — nothing to install.
Pricing
What the alternatives cost to get the same two files:
If the files don't upload cleanly to KDP, email us within 7 days and we'll refund you in full. No subscription, no free-trial trap — you pay once, per book.
Format your book
Add your manuscript and options, then pay once. We start formatting right after payment.