G2 is a visualization grammar for building dashboards, exploring data, and creating data-driven stories through declarative chart specifications.
G2 solves the problem of creating meaningful visualizations quickly without requiring deep knowledge of graphics programming. It implements a grammar-of-graphics approach inspired by Leland Wilkinson's foundational work, allowing developers to specify charts through high-level declarations that infer sensible defaults while remaining configurable for advanced use cases. The tool provides a functional declarative API that supports data-driven animations and interaction patterns, backed by a powerful renderer that can output to Canvas, SVG, or WebGL.
Developers should choose G2 if they need flexible, programmatic control over visualization creation with the ability to reuse logic across multiple charts. It suits projects ranging from simple dashboard building to complex data exploration interfaces where declarative specifications provide better maintainability than imperative approaches. The tool's high extensibility means you can customize scales, transforms, marks, and other components, or build entirely new visualization tools on top of its foundation. The ecosystem includes React bindings, official extensions for advanced features like 3D visualization and automated visual analytics, and integration with design systems like Ant Design.
The project maintains active engagement with its community through discussion forums and contribution pathways. Development shows consistent attention to expanding the renderer's capabilities, particularly around novel rendering styles and integration with established visualization ecosystems. The codebase demonstrates a commitment to comprehensive grammar coverage, regularly adding support for new mark types, transforms, and interaction patterns rather than relying on a fixed set of predefined chart types.
