Coloring Book Engine (CBE) is an end-to-end production toolkit for creators who want to run a coloring book business—not just make a PDF. CBE helps you build commercial-quality books with print-ready exports (margins/bleed, single-sided pagination), while also generating the reusable assets you need for scaling a catalog. On top of that, it supports creating promotional coloring videos so you can market each page/book across YouTube Shorts, TikTok, and other channels. With BYOK (Bring Your Own Key) AI integrations, you keep control over model choice, privacy, and costs—without forced subscriptions or lock-in. End-to-end workflow for a coloring book business (book + assets + promo) KDP-ready exports: margins/bleed, print-safe layout, single-sided pagination Batch production for scaling series/catalogs Promotional coloring video creation for Shorts/TikTok marketing Multi-export formats (ARC/watermarked, Digital, Paperback/KDP) BYOK AI integration to control costs and avoid subscriptions