Jupyter Notebook Widgets Frontend Extension
JSON →widgetsnbextension is a Python package that provides the essential JavaScript frontend components, enabling Jupyter interactive widgets (ipywidgets) to function within the classic Jupyter Notebook environment. It acts as a bridge, allowing Python widget objects in the kernel to be rendered and interact with the user interface. The library, currently at version 4.0.15 (released November 1, 2025), is an integral part of the broader Jupyter Widgets ecosystem, maintaining an active release cadence alongside ipywidgets and Jupyter itself.
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API endpoints
full doc /v1/registry/widgetsnbextension
compatibility /v1/registry/widgetsnbextension/compatibility