C3.js
C3.js provides reusable charts for websites through a library built on D3.js.
About C3.js
C3.js is a D3.js-based reusable chart library designed for use on websites. It simplifies generating D3-based charts by wrapping the code required to construct full charts, eliminating the need for users to write raw D3 code for common chart types. The library assigns CSS classes to each generated chart element to support custom styling, allows direct extension of chart structure via D3, and provides a range of APIs and callbacks to access chart state and update charts after they are rendered. Due to its dependency on D3, C3.js only supports modern web browsers.
Key features
- Wraps D3 code to generate charts without raw D3 writing
- Assigns CSS classes to chart elements for custom styling
- Allows direct chart structure extension via D3
- Provides APIs and callbacks to access chart state
- Supports updating charts after they are rendered
- Only compatible with modern web browsers
Best for: Web developers building websites who want to add D3-based charts without writing raw D3 code.
Good for
- Eliminates need to write raw D3 code for chart generation
- Supports CSS-based customization and direct D3 extension
- Provides APIs and callbacks for post-render chart updates
Watch out for
- Only supports modern web browsers due to D3 dependency
C3.js at a glance
- Website
- c3js.org
- Category
- Design & Creative › Charts & Data Visualization
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Charts & Data Visualization
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Pick
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C3.js FAQ
What underlying library does C3.js use?
D3.js
Can charts generated with C3.js be modified after rendering?
Yes, using the library's APIs and callbacks to update chart state.
Is raw D3 code required to create charts with C3.js?
No, C3.js wraps the D3 code needed to construct full charts.
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