Book Interior KitAnswersKDP large-print coloring books
Should black-and-white KDP line art be uploaded as grayscale or color?
Short answer: For black-and-white line art, prepare the interior as black-and-white or grayscale unless the book intentionally uses color printing.
Why this matters
KDP print options affect production cost and buyer price. Coloring books and puzzle books usually do not need color interiors if the artwork is line art. Choosing color for black-and-white pages can change the economics of the book.
Recommended workflow
- Decide whether the printed book truly needs color.
- For line art, use the app's black-and-white or grayscale-oriented output settings.
- Preview the PDF locally and check that lines stay clear.
- Confirm the print option and cost inside KDP before publishing.
Where Book Interior Kit fits
Book Interior Kit helps with the local file-preparation step for image-based KDP paperback interiors. It is independent software, not an Amazon or KDP official product.
Before publishing
- Avoid accidental color mode for line-art interiors.
- Review contrast after grayscale conversion.
- Confirm KDP print-cost implications before setting the final price.