Lumen Tool
A 3D portrait lighting simulator
Lumen Tool launched on April 28, 2026 with 66 votes, #818 of 21,248 launches that month and more than 95% of that year's launches.
What it does
Lumen Tool is a free 3D portrait lighting simulator that runs entirely in your browser. Most alternatives are either expensive desktop software or outdated browser tools that cycle through pre-rendered photos. Lumen renders shadows in real time using Three.js, loads in under a second, and requires no install or account. It's a single HTML file under 1MB. Move a light, watch the shadows shift live. That's it.
Lumen Tool is a free portrait lighting simulator for photographers. Test light position, angle, distance, softness and color in your browser before a real shoot.
This lighting simulator runs in your browser and needs JavaScript switched on. Please enable it and reload the page. Lumen Tool is an interactive portrait lighting simulator for photographers and creators. Explore how light position, angle, distance, softness and color shape a face before a real shoot. Lumen Tool is an interactive portrait lighting simulator for planning light position, color, contrast and savedfrom lumentool.com
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