The PuzzleBindery Blog

Practical guides to publishing puzzle and activity books — written from actually doing it, with the real numbers rather than the usual affiliate hand-waving.

Guide · 14 min read

How to Start a Puzzle Book Business on Amazon KDP

The complete walkthrough: choosing a niche that actually sells, how many puzzles a book needs, the print specifications Amazon enforces, exactly what you earn per copy, and the eight steps from blank page to a live listing. Includes the real royalty maths for a 38-page and a 120-page book.

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Comparison · 8 min read

The Best Puzzle Book Software in 2026, Honestly Compared

Book Bolt, A Book Creator, Tangent Templates, PuzzleBindery and the free options — what each one actually does, what it costs over a year, and which is right for you. Including the cases where we are the wrong choice.

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Reference · 6 min read

KDP Margins, Bleed and Spine Width, Explained Properly

Why Amazon rejects interiors and covers, what every number in the print specification means, and the exact formulas — gutter tiers by page count, bleed dimensions, and the spine multipliers for white and cream paper.

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Publishing on KDP? Get the specs that cause rejections

Gutter tiers, the interior-versus-cover bleed difference, spine width per paper stock and the page ceilings nobody mentions. I’ll send the guide and a note when Amazon changes the rules.

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