How to create and sell an AI coloring book on Amazon KDP

Coloring books are one of the most consistent niches on KDP: low competition for narrow themes, high gift-purchase rates and almost no text to write. AI line-art generation has made the production cost collapse — but quality control is still where most sellers fail.

Pick a narrow theme

"Animals" is dead. "Cottagecore mushroom forests for adults" is alive. The narrower your theme, the easier it is to rank in Amazon search and to be discovered by gift buyers.

Quality benchmarks

• Pure black lines on pure white background, no gray
• Line weight thick enough to color inside (2–4 px equivalent)
• No tiny disconnected details that print as dots
• Single-page layout, never two-page spreads

KDP format

Use 8.5"x11" trim, 0.5" inside margin, 50–100 pages. Always print one proof copy before launching — what looks crisp on screen often prints muddy. PublishBooksAI generates print-ready coloring PDFs that respect these constraints automatically.

Pricing

$6.99–$8.99 is the sweet spot for adult coloring books. Going lower trains buyers to expect bargain quality; going higher requires social proof you don't have on launch day.