F2 is a charting library for mobile that renders interactive visualizations on HTML5 Canvas and other environments.
F2 solves the problem of creating performant, mobile-optimized charts by applying grammar of graphics theory to data visualization. Rather than building individual chart types in isolation, the tool uses a compositional approach where chart types emerge from combining graphical elements according to grammatical rules. This allows a single codebase to express over fifty chart types while maintaining a small footprint optimized for mobile devices.
The tool suits teams building mobile-first applications that need rich charting capabilities without sacrificing performance. F2 is particularly valuable for projects targeting fragmented time consumption patterns where users need to extract information quickly from visualizations. The library's modular design supports dynamic loading, allowing developers to include only the chart types and interactions their application requires. Beyond HTML5, the tool runs on Node.js, WeChat mini-programs, Alipay mini-programs, React Native, and Weex, enabling code reuse across multiple platforms and environments. The project emphasizes mobile design principles in its interaction model, aiming for natural user behavior rather than desktop-oriented interaction patterns.
Development activity shows consistent engagement with the codebase through regular updates and maintenance. The project maintains comprehensive documentation including tutorials, API references, and example galleries. The maintainers provide extension mechanisms for custom shapes, animations, and interactions, indicating openness to developer customization needs. Active support for multiple platform targets demonstrates ongoing investment in cross-environment compatibility.
