This gallery example analyzes the PDF.js contributor ecosystem through a network graph and interactive charts. A force-directed network using `d3.forceSimulation` and `d3.forceLink` shows collaborations between authors and repositories, with nodes color-coded by role and clickable to highlight connected paths. Additional bar charts, including stacked charts for missing children data by gender and grouped bars for police complaints, use `d3.rollups`, `d3.stack`, and zoomable SVG with `d3.zoom`. All visualizations are rendered in React with SVG and WebGL, featuring tooltips, legends, and animated transitions. Source data comes from CSV files loaded via `d3.csv`.