This interactive family tree visualization displays hierarchical relationships using an SVG-based node-link diagram. The tree is rendered with colored, rounded rectangles representing individuals, connected by labeled, arrowed links. Built with D3 v3’s layout and behavior APIs (`d3.layout.tree`, `d3.behavior.zoom`), the visualization supports zooming, panning, and node expansion via click interactions. Data is loaded from a local JSON file (`data.json`), and custom CSS controls node colors and tooltip styling.