PaintsChainer

PaintsChainer is a web-based image generation tool focused on automatic colorization of black-and-white line art, launched by Preferred’s research/development teams to demonstrate neural-network-driven illustration assistance (original web release circa 2017). It positions itself as a practical illustrator aid: you upload a line drawing, choose a coloring style, optionally add color hints, and receive a colored result. The service emphasizes fast iterations for concept stages rather than final photorealistic rendering, making it a lightweight companion for creative workflows.

Key features include automatic colorization driven by trained convolutional neural networks that analyze line density and inferred shading; users can paint color hints directly on the canvas to steer palette and placement, producing more predictable results. The interface exposes multiple style modes (e.g., soft painterly, flat anime-style, and blended shading) so users can pick a look matched to their project. PaintsChainer supports transparent-background PNG export for compositing, and the web UI accepts common image formats (PNG/JPEG); higher-resolution outputs and batch processing are gated behind paid access. The tool also saves recent jobs for quick re-runs and allows toggling between the original line art and colored preview for comparison.

Pricing begins with a free tier that permits basic single-image colorizations with size and queue limits, suitable for testing and casual use. A paid “Premium” subscription (price shown on site; approximate low-cost monthly fee) unlocks higher-resolution exports, reduced queue wait times, and more frequent daily runs. For teams or commercial projects, a business/enterprise option with custom quotas and priority processing is available by contacting support. Exact regional pricing and currency are listed on PaintsChainer’s site; note that paid tiers remove many of the free-tier constraints like output size and processing priority (prices listed here are approximate if regional variations apply).

Artists, concept illustrators, and small studios use PaintsChainer to accelerate early-stage coloring. Example users: a freelance illustrator using it to produce 20 initial color studies per day to show to clients, and a game concept artist using it to iterate color palettes across 50 character sketches per week. It’s best compared to image-to-image tools like Stable Diffusion’s img2img for broader generation, but PaintsChainer’s specialized line-art color hint system and straightforward web UI make it more focused for illustration-first workflows.