Free browser-based tools for painters and sketch artists. No sign-up, no uploads to a server — everything runs locally in your browser.
Simplify your reference photos into flat tonal levels. Adjust color modes, edge detection, smoothing, and export a clean painting reference.
Values & SimplificationOverlay rule of thirds, golden ratio, golden spiral, and dynamic symmetry on your reference. Crop to test framing, reduce to notan values, or visualize focal point density.
Composition & LayoutSee what you're NOT painting. Threshold silhouettes reveal shapes, click-to-fill highlights negative areas, and contour view strips everything to outlines.
Negative Space & Shapes