Show HN: VividManga – AI-based manga coloring focused on line art consistency

Hi HN,

I built VividManga because most general image colorization models perform poorly on manga-style black-and-white line art — they often blur lines or destroy panel structure.

VividManga focuses specifically on manga coloring, using an image-to-image workflow tuned for clean line preservation, flat color regions, and consistent shading.

The core idea is to treat manga pages differently from natural images: - prioritize line preservation over texture realism - bias the model toward flat colors and controlled gradients - keep prompts minimal to reduce style drift

Currently it supports coloring single panels or full pages, with simple tag-based control.

This is still early and opinionated, and I’d really appreciate feedback from people who work with manga/comics or have experience with diffusion models and line art preservation.

https://vividmanga.com