---
title: "KDP codeword maker: generate once, export every trim"
description: "Generate a whole codeword book across a difficulty curve, then export every KDP trim at 300 DPI. Unlock a project once for $4.99 and re-export forever."
source: "https://www.oncebooks.com/kdp-codeword-maker"
---

Publisher Studio

# The KDP codeword maker

Generate a whole graded codeword book, then export it at every KDP trim, print-ready at 300 DPI. Make one puzzle free in your browser, unlock a full project for a one-time fee, and export unlimited formats forever.

[Open Publisher Studio](https://app.oncebooks.com/publisher-studio/codeword)[Make one free first](https://www.oncebooks.com/tools/codeword-generator)

$4.99 once per project. Unlimited exports, every trim. No subscription.

## Every puzzle decodes one way

The studio lays real words, numbers them, and proves against a dictionary that the starting key forces a single decoding. The decoded grid prints as the answer key, so nothing is ambiguous.

## Every KDP trim, 300 DPI

Pick any of KDP's 17 trim sizes, from 5.06 by 7.81 up to 8.27 by 11.69, with correct margins and gutter. The single interior file you upload passes KDP review.

## Generate once, export forever

One project unlocks for $4.99. After that, re-export any trim, any time. No monthly subscription and nothing to cancel.

## How it works

1. Try a free puzzle. Use the free generator in your browser to make one codeword and its answer, so you can see the output before you commit.
2. Pick a difficulty curve. In Publisher Studio, choose how many puzzles at each grade; harder grades reveal fewer starting letters. The studio builds the whole graded book.
3. Choose your KDP trim. Pick a trim size. The interior is sized with the right margins and gutter for the page count so it passes KDP review.
4. Unlock once, export any size. Unlock the project for $4.99, then export the print-ready interior and solutions PDFs at any trim, as often as you like.

## Free tool or full studio

The [free generator](https://www.oncebooks.com/tools/codeword-generator) makes one printable puzzle to try the engine. Publisher Studio is where you make a book to sell.

| Free generator | Publisher Studio |
| --- | --- |
| One puzzle and one answer page | Hundreds of graded puzzles with a solutions section |
| Large print only, printed from the browser | Every KDP trim, 300 DPI, print-ready PDFs |
| One difficulty at a time | A graded easy-to-expert difficulty curve |
| Nothing is saved once you close the tab | A durable project, re-export any size forever ($4.99) |

## One price, per project

$4.99

Paid once. Export unlimited formats, forever.

- Print-ready 300 DPI interior PDF
- Separate solutions PDF
- Every KDP trim size and format
- Re-export any size, any time

[Open Publisher Studio](https://app.oncebooks.com/publisher-studio/codeword)

[Comparison Once Books vs Book Bolt A purpose-built puzzle-book maker you pay for once, versus an all-in-one KDP suite on a subscription.](https://www.oncebooks.com/compare/book-bolt)

## Questions

**How much does it cost?**

A project unlocks for $4.99, paid once. After that you can export the interior and solutions PDFs at any KDP trim, as many formats as you like, forever. There is no subscription.

**What do I get when I export?**

One print-ready 300 DPI interior PDF, with the decoded answers at the back, sized for the KDP trim you choose. That interior is the single file you upload to KDP. You also get a separate solutions PDF.

**Are the puzzles guaranteed to decode one way?**

Yes. Every puzzle is generated and checked against a dictionary so the starting key forces exactly one decoding, before it enters the book. The printed answer matches every puzzle.

**Can I try it before I pay?**

Yes. The free codeword generator makes a real 2-page puzzle in your browser with no sign-up. The unlock is only for a full multi-puzzle project you plan to publish.

**Can I sell the books I make?**

Yes. The exported interiors are yours to publish and sell on Amazon KDP or print yourself. The per-project unlock covers unlimited exports of that project.