The Fabric Notebook Renderer is a free Chrome add-on designed to enhance the viewing experience of Microsoft Fabric notebooks directly on GitHub. It transforms raw `.py` notebook files into structured cell cards, providing features such as syntax highlighting for Python and Spark SQL, collapsible cells, and easy navigation between notebook and raw views. Users can enjoy rich text rendering for markdown cells and convenient toggling for viewing preferences.

Additionally, the tool offers a powerful PR diff view that allows for cell-level diffs and side-by-side comparisons of modified cells. Color-coded badges indicate added or removed cells, while unchanged code lines can be collapsed for clarity. With customizable settings, users can adjust their viewing experience without compromising privacy, as the extension does not collect data and operates solely on GitHub.