Chart.js is a free, open-source JavaScript library for creating interactive data visualizations on websites. It renders charts using the HTML5 element and supports eight main chart types, including bar, line, area, pie/doughnut, bubble, radar, polar-area, and scatter charts. Created by web developer Nick Downie in 2013, Chart.js is maintained by an open-source community and distributed under the MIT License. It has become one of the most popular JavaScript charting libraries, valued particularly for being relatively easy to learn and integrate into web applications.
The library has evolved significantly through several major releases. Version 2 introduced features such as improved animations, time scales, bubble and scatter plots, and stacked charts; version 3 brought major performance improvements, scriptable configuration options, a redesigned animation system, and improved documentation. Version 4, released in 2022, moved the package toward modern JavaScript standards with ESM-only packaging. Compared with more powerful visualization libraries such as D3.js, Chart.js generally offers less fine-grained customization but provides a much simpler way to create attractive, responsive charts with relatively little code.
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The library has evolved significantly through several major releases. Version 2 introduced features such as improved animations, time scales, bubble and scatter plots, and stacked charts; version 3 brought major performance improvements, scriptable configuration options, a redesigned animation system, and improved documentation. Version 4, released in 2022, moved the package toward modern JavaScript standards with ESM-only packaging. Compared with more powerful visualization libraries such as D3.js, Chart.js generally offers less fine-grained customization but provides a much simpler way to create attractive, responsive charts with relatively little code.
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