LuminaBrush

LuminaBrush is a web AI tool that relights images. Users upload a photo, choose or upload a target background, and run Relight. It targets digital artists, concept artists and photographers, and advertises a free way to start.

LuminaBrush is a web-based AI tool for changing the lighting of images. Instead of repainting highlights and shadows by hand, a user supplies a picture and the tool generates new illumination for it. The homepage frames it for digital artists, concept artists, illustrators and photographers who want to experiment with mood and light without rebuilding a scene from scratch. The workflow shown on the site is short. A user imports a photo, then either uploads a target background or picks one from a gallery of sample backgrounds, and finally presses the Relight button so the model analyzes the image and produces the result. An adjustable inference-steps setting sits beside the controls, and the embedded demo is based on a research method called Latent Bridge Matching, with a relighting checkpoint from Jasper Research. The page notes that this demo is for research purposes only, and that some sample backgrounds come from the IC-Light project. The marketing copy describes a two-stage approach: the first stage converts an image to uniform lighting, and the second generates illumination effects guided by user input. The site also lists a brush engine, a real-time preview, customizable brush tools, a layer system and a streamlined interface, and says it is built on the Flux framework. The effect types named in the FAQ include directional light, multi-source setups, rim highlights, volumetric effects, color temperature control and atmospheric ambience. Several of these claims are made in promotional language, and the interactive demo visible on the page only exposes the image, background and step-count controls, so buyers should judge the fuller toolset by trying it. In the wider market, LuminaBrush sits among AI image editors and relighting tools aimed at creative work rather than general photo retouching. Its appeal is a narrow focus on light, a free entry point advertised through its calls to action, and a simple upload-and-relight loop. Pricing, plan limits, export formats and support channels are not described on the homepage, which makes it better suited to experimentation than to a procurement decision without further checking.