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Voronoi Diagram Generator — Free Online Tool | Pixlane

Generate Voronoi diagrams over images or random point distributions. Choose Euclidean or Manhattan distance metrics, enable stippling mode for Lloyd-relaxed point plots, or tile the plane with uniformly colored cells.

All processing runs locally in your browser. Your files never leave your device — no upload, no server, no signup required.

Frequently Asked Questions

What is a Voronoi diagram?

A Voronoi diagram partitions the plane into cells based on distance to a set of seed points — every point belongs to the cell of its nearest seed.

What is Lloyd relaxation?

Lloyd's algorithm iteratively moves each seed to its cell's centroid, converging toward a centroidal Voronoi tessellation with uniformly sized, well-shaped cells. Used for artistic stippling.

What is stippling?

Stippling approximates an image with evenly distributed dots or cells, denser in dark regions — the rendering style used in engraving, pen-and-ink illustration, and halftone art.

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