PuzzleBook Studio
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For Amazon KDP puzzle-book publishers

Finished, print-correct puzzle books. Every puzzle unique. One payment.

Build word search, sudoku, maze and 6 more puzzle types into a finished book: interior, answer keys, cover and listing. Every page is checked against KDP’s print rules, and every puzzle against your whole catalog.

One payment. Works in any browser. Your books stay on your computer.

Try the free preflight checker See pricing
  • No trial trap
  • 30-day refund
  • Mac, Windows, Chromebook
  • Works offline
Preflight · p.14Print-safe
  • All 14 words found exactly once
  • No rude words in any of 8 directions
  • Grid lines 1 pt · KDP minimum 0.75 pt
  • Letters 24 pt · large-print floor 18 pt
What we block before export

Every known reason puzzle books get rejected or returned

We check what a reviewer or a reader will notice — and stop the export until it is right.

  1. 01

    Add 100 pages. Your margins fix themselves.

    The gutter grows with your page count, and grids reflow to fit. Nothing slides into the spine.

  2. 02

    Grids that print dark and clear.

    Lines under 0.75 pt and grey fills under 10% block export.

  3. 03

    Zero repeated puzzles across your catalog.

    Every grid is fingerprinted. Reusing one in any of your books is blocked (Solo and up).

  4. 04

    Large print that’s actually large.

    Grid letters never under 18 pt and text never under 16 pt, or we won’t let you label it large print.

  5. 05

    Every word verified findable.

    Each word is placed exactly once, and the answer key is drawn for you.

  6. 06

    Every sudoku has exactly one solution.

    Checked by a solver, and graded by the techniques needed to solve it.

  7. 07

    Family-safe grids.

    Filler letters are scanned in all 8 directions, so no rude word appears by accident.

  8. 08

    Cover and interior can’t drift apart.

    The cover is built from the final page count. Spine text switches off below 80 pages.

Margin-first layout

Add 100 pages. Your margins fix themselves.

KDP’s minimum gutter depends on page count: 0.375 in up to 150 pages, 0.5 in from 151. The studio recomputes the gutter, fits the grids and resizes the cover spine every time you add or remove a page.

Pages
124
KDP gutter
0.375 in
Spine
0.279 in
Pages
224
KDP gutter
0.5 in
Spine
0.504 in
8.5 × 11 in · white paper · KDP minimums shown
One tool, not five

Puzzles, answer keys, cover and listing — in one place

  1. 01

    Pick a preset

    Large print, standard, kids or sudoku. Trim, margins, fonts and puzzle rules are set for KDP.

  2. 02

    Generate the book

    Easy to hard, answer keys laid out. Nothing repeats from your other books.

  3. 03

    Run preflight

    Every page and the cover checked against KDP’s rules. Each problem has a Fix button.

  4. 04

    Export and upload

    One ZIP: interior PDF, cover PDF, listing text and a backup — read back and checked.

The preflight report

Red can’t export. Amber is your call.

No codes, no jargon. Each check gives the cause, what it will do to your book, and the number to change.

  • Blocks export
    KDP will reject it or print it badly.
  • Warning
    KDP accepts it, but readers may notice.
  • Print-safe
    Checked and within the rules.

9 puzzle types at launch

  • Word search
  • Sudoku
  • Maze
  • Word scramble
  • Cryptogram
  • Number search
  • Fill-in
  • Arithmetic
  • Tracing

Next release: crossword with a clue editor, word ladder, nonogram, kakuro and logic grids. New types arrive in your tier at no charge.

How puzzles are made

Seniors and kids read differently. The presets know that.

  • Honest large print

    Big letters, words across and down only, one puzzle a page. The “Large Print” label unlocks only when the whole book passes.

  • Kids pack

    Letter and number tracing, simple arithmetic and 4 × 4 sudoku in bigger cells with friendlier fonts (Solo and up).

  • Family-safe by default

    The profanity filter is on for every grid, in every direction. Word lists are checked for typos before they go in a puzzle.

Local-first

Your books stay on your computer

The studio runs in your browser — Mac, Windows or Chromebook. Puzzles are generated and PDFs are built on your device, so there is nothing to upload and nothing that stops working if our servers do. Cloud backup is optional and encrypted.

See the PDFs before you pay

Real interiors exported from the studio. Print one at home and hold it next to what you use now.

  • Garden Birds — Large Print

    Word search · 30 puzzles · 8.5 × 11 · 36 pp · answers included

    Download sample PDF

  • Brain Games Sampler

    Word search, sudoku, maze, scramble, cryptogram · 8.5 × 11 · 36 pp

    Download sample PDF

  • Pocket Sudoku

    Sudoku, two per page · 6 × 9 · 40 pp · answers included

    Download sample PDF

Pay once. Keep it.

No trial that turns into a charge. 30-day refund on every plan. Upgrade any time and pay only the difference.

  • Starter

    Your first book

    $39 once · lifetime only

    • Word search, sudoku and maze
    • Book composer and answer keys
    • Preflight that blocks export
    • Cover studio
    • Large-print, seniors and compact presets
  • Most popular · founder price

    Solo

    Solo publishers

    $79 once · then $119 after the founder window

    • All engines, including future ones in this tier
    • Catalog ledger and uniqueness report
    • Kids preset and kids engines
    • Listing helper, claims checker, slot planner
    • AI with your own key, logged

  • Pro

    Running a catalogue

    $149 once · lifetime only

    • Everything in Solo
    • Priority support
    • Next release: variety score, series generator, multi-language lists, custom presets, PNG/SVG, 3D mockups

  • Agency

    Client work · 5 seats

    $249 once · lifetime only

    • Everything in Pro
    • 5 seats, 3 devices each
    • Client-work licence and handover

Monthly: $7/month with Solo features, cancel in 2 clicks. Free: the PDF checker, calculator and single-puzzle generators. Payments by Lemon Squeezy.

Compare every plan

Useful before you buy anything

They run the same checks as the studio, and they work on files made with any tool.

Get the founders price when paid plans start

Every feature is free during the beta. Leave your email and we send the founders price first.

Straight answers

Is PuzzleBook Studio part of Amazon?
No. It is an independent tool. We check your files against KDP’s published paperback guidelines.
Where are my books stored?
On your computer, in your browser’s storage. Back up any time as a file; cloud backup is optional and encrypted.
Does it work offline?
Yes, after the first load. Generating puzzles and building PDFs both happen on your device.
Is it a subscription?
Only if you want one. Lifetime plans are one payment. Monthly cancels in two clicks.
How does AI disclosure work?
Any AI you use in the studio is logged per book. The listing helper tells you how to answer KDP’s AI question.
What if I change my mind?
Ask within 30 days for a full refund. One policy, one page.
Can I check a book I made somewhere else?
Yes. The free PDF checker runs the same preflight on any interior or cover PDF.
Which trim sizes do you support?
8.5 × 11, 8 × 10, 6 × 9, 8.27 × 11.69 (A4), 5 × 8, 5.5 × 8.5, 7 × 10, 8.25 × 8.25, 8.5 × 8.5 in.

Fix it here, not in your reviews.

One payment. No trial trap. 30-day refund.

See pricing Try the free preflight checker