JupyterLab is a next-generation web-based user interface for Project Jupyter.

JupyterLab enables you to work with documents and activities such as Jupyter notebooks, text editors, terminals, and custom components in a flexible, integrated, and extensible manner. For a demonstration of JupyterLab and its features, you can view this video:

You can arrange multiple documents and activities side by side in the work area using tabs and splitters. Documents and activities integrate with each other, enabling new workflows for interactive computing, for example:

  • Code Consoles provide transient scratchpads for running code interactively, with full support for rich output. A code console can be linked to a notebook kernel as a computation log from the notebook, for example.

  • Kernel-backed documents enable code in any text file (Markdown, Python, R, LaTeX, etc.) to be run interactively in any Jupyter kernel.

  • Notebook cell outputs can be mirrored into their own tab, side by side with the notebook, enabling simple dashboards with interactive controls backed by a kernel.

  • Multiple views of documents with different editors or viewers enable live editing of documents reflected in other viewers. For example, it is easy to have live preview of Markdown, Delimiter-separated Values, or Vega/Vega-Lite documents.

JupyterLab also offers a unified model for viewing and handling data formats. JupyterLab understands many file formats (images, CSV, JSON, Markdown, PDF, Vega, Vega-Lite, etc.) and can also display rich kernel output in these formats. See File and Output Formats for more information.

To navigate the user interface, JupyterLab offers customizable keyboard shortcuts and the ability to use key maps from vim, emacs, and Sublime Text in the text editor.

JupyterLab extensions can customize or enhance any part of JupyterLab, including new themes, file editors, and custom components.

JupyterLab is served from the same server and uses the same notebook document format as the classic Jupyter Notebook.

JupyterLab Releases

Since JupyterLab 0.32 (February 2018), the releases of JupyterLab are suitable for general daily use by both Jupyter novices and users experienced with the Classic Notebook interface. As of the 1.0 release (June 2019), it is additionally ready for extension writers who wish to further customize the JupyterLab experience for others. Please review the JupyterLab Changelog for detailed descriptions of each release.

The extension developer API is evolving, and we also are currently iterating on UI/UX improvements. We appreciate feedback on our GitHub issues page as we evolve towards a stable extension development API.