Chart.js

About Chart.js

Chart.js is an open-source JavaScript library for creating charts on web pages using the HTML5 Canvas element. It supports 8 chart types, including mixed chart types such as combined bar and line charts within a single visualization. Charts are responsive, automatically redrawing on window resize, and support configurable animations for data changes, color updates, and dataset additions.

The library offers a colors plugin providing a default palette of Chart.js brand colors with zero configuration, and supports tree-shaking so bundle size can be reduced by registering only the components needed. Additional features include a subtitle plugin, configurable line segment styling, and stacked/weighted scale layouts. It supports plotting on date-time, logarithmic, and custom axis types, and includes a decimation plugin for handling large datasets (demonstrated with 1 million data points).

Chart.js is community maintained and intended for developers building charting and data visualization functionality into websites and web applications.

Key features

• 8 built-in chart types including bar, line, and mixed chart types
• HTML5 Canvas rendering for strong performance across modern browsers
• Responsive charts that redraw automatically on window resize
• Configurable per-element animations and transitions
• Tree-shaking support to reduce JavaScript bundle size by registering only needed components
• Built-in colors plugin with a default Chart.js brand palette

Frequently asked questions