D2 Widget

The workflow for creating diagrams in computational notebooks is often a broken experience. It forces a context switch to external tools, reducing a dynamic process of thought and exploration into a static one of importing and managing images. This interruption breaks the very interactive loop that makes notebooks a powerful environment for analysis and documentation.

This widget brings the diagramming process back into the notebook. It integrates the declarative diagram language D2 directly into environments like Jupyter and Marimo , so you can write text-based diagrams and see live previews inline. The goal is to treat diagrams as code: versionable, reproducible, and integrated with the surrounding analysis.

The implementation uses anywidget to bridge the Python backend with a lightweight frontend. By handling notebook-specific integration details behind the scenes, the widget stays simple to use for quick sketches and programmatic diagram generation.