KDP fonts, lines and image rules
Small details that cause rejections: unembedded fonts, hairlines and pale greys.
- Fonts
- All fonts embedded
- Lines
- 0.75 pt minimum
- Greys
- 10% or darker
Source
- KDP help: Paperback submission guidelines, file requirements. Last checked Oct 2026. Not affiliated with Amazon.
More KDP rules
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.
Large print puzzle books on KDP
Large print means readable type. The studio blocks the label until the text size is met.