A Donut Chart is a variant of a pie chart with a blank center area, making the chart more visually appealing and easier to read. Donut charts are especially suitable for displaying totals or key metrics in the center, while showing the proportion of each part. Compared to traditional pie charts, donut charts have a more modern visual style and make it easier to compare different sector sizes. This tool supports customizing the inner radius, data items, color configuration, legend display, and more. The generated chart can be exported in PNG or SVG format. Use cases: sales analysis, user distribution, resource allocation, budget expenditure, market share, and other data visualizations that highlight overall and part relationships.