Artwork colored with this program is not eligible for upload to e621.

style2paints (S2P) is an AI-based colorization tool developed by Chinese programmers LvMin Zhang, Chengze Li, Tien-Tsin Wong, Yi Ji and ChunPing Liu. The program uses a reference image provided by the user and a process modeled on a standard 4-step colorization workflow (sketch, flat color, gradient color, shading) to automatically color lineart.

Version 4 of S2P was originally hosted as a web app, but was taken offline due to excessive hosting costs. The currently available versions are only for reference use.