KDP paperback rules for puzzle books, on one page
Kept current with KDP’s help pages. Last checked Oct 2026. Not affiliated with Amazon.
- Trim sizes
- 6 × 9, 8 × 10, 8.5 × 11 are the common puzzle trims.
- Gutter
- 0.375 in to 150 pp · 0.5 in to 300 · 0.625 in to 500 · 0.75 in to 700 · 0.875 in to 828.
- Outside margins
- At least 0.25 in, or 0.375 in with bleed.
- Bleed
- 0.125 in on the outside edges when ink runs off the page.
- Spine
- Pages × caliper: white 0.002252 in, cream 0.0025 in, groundwood 0.00235 in, colour 0.002347 in.
- Spine text
- Only above 80 pages. Keep it 0.0625 in from each fold.
- Lines
- 0.75 pt minimum. Greys 10% or darker.
- Page count
- 24 to 828, depending on trim, paper and ink. 8.5 × 11: 590 white, 550 cream, 578 groundwood.
- Fonts
- All fonts embedded.
- Large print
- 16 pt or larger body text.
Explainers
KDP margins and gutter for puzzle books
The inside margin grows with the page count so text is not lost in the binding.
KDP spine width and cover size
The spine is the page count times the paper thickness, and the cover is front, spine, back and bleed.
KDP page count limits by trim and paper
Minimum and maximum page counts depend on trim size, paper and ink.
KDP fonts, lines and image rules
Small details that cause rejections: unembedded fonts, hairlines and pale greys.
Large print puzzle books on KDP
Large print means readable type. The studio blocks the label until the text size is met.