You wrote a book a kid will carry to bed. It deserves better than a clip-art rocket on a gradient. Parents browse Amazon thumbnails the size of a postage stamp — your cover has about a second to look like it belongs next to the Caldecott shelf, not a generic template.
Not opinion. Pattern-counted across every cover in the top tier — refreshed quarterly so what works this season is what your cover follows.
6 archetypes shown · more once you pick a subgenre on the next screen.
Every cover we generate is constrained away from these by default — that’s the whole point of anchoring to what already sells.
Title, author, subtitle. No prompt engineering, no AI vocabulary.
Pre-tuned to the patterns in the Pillar 0 exhibit above — you can't accidentally pick a non-children look.
1600 × 2560 ebook PNG + 300 DPI print at 1792 × 2688. Full commercial rights.
Square 8.5 × 8.5 is the KDP picture-book standard — it shows full-bleed art best and survives the Amazon thumbnail. Every cover we export is already sized to this — no calculator, no re-do.
Children's covers are the most expensive to outsource — illustration drives the bill.