jupyterlite-pyodide-kernel
Python kernel for JupyterLite powered by Pyodide
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has low install friction, carries a permissive license, and solves a real problem—running Python in the browser without a server. It integrates cleanly into JupyterLite's build system and supports current Python versions. Install it if you need to build serverless Jupyter notebooks or interactive browser-based Python environments.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires jupyterlite-core and a JupyterLite site structure to build; the kernel integrates as a labextension and CLI addon, not a standalone library.
- Low install friction with a pure-Python wheel.
- Actively maintained with a release 3 days old and recent commits.
License · maintenance · safety
BSD-3-Clause (permissive) — BSD-3-Clause is permissive; you may use, modify, and distribute this package with minimal restrictions, provided you retain the license notice.
last release 2026-08-11 (3 days) · last repo commit 2026-08-11 · 88 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 161,433 downloads/mo, #10,635 on PyPI
Alternatives
Verify before relying
pip install jupyterlite-pyodide-kernel
jupyter lite build- Whether the optional [lock] extra (pyodide-lock, uv) is necessary for typical workflows or only for advanced package management.
- Performance characteristics and browser compatibility across different environments.
- Whether pre-built Pyodide wheels cover the packages you need or if custom wheel management is required.
What it is and what it does
jupyterlite-pyodide-kernel is a JupyterLite extension that adds a Python kernel powered by Pyodide, allowing Python code to run directly in the browser as WebAssembly. It integrates with the JupyterLite build system via CLI addons and labextension assets, enabling interactive notebooks without a backend server.
The kernel depends on jupyterlite-core and pkginfo. It supports configuring the Pyodide distribution, managing runtime-installable wheels via %pip, and customizing the Pyodide lockfile for automatic package imports. Optional features like the [lock] extra provide tools for managing local or PyPI packages and their dependencies in the lockfile.
Use it for
- Build a shareable, serverless Jupyter notebook that runs entirely in the browser for teaching or demos.
- Create offline-capable interactive documentation or tutorials that require no backend infrastructure.
- Develop and test Python code in a lightweight, browser-based environment without setting up a Jupyter server.
- Customize the Pyodide environment by adding local wheels or PyPI packages to the lockfile for specific use cases.
- Deploy interactive notebooks to static hosting (GitHub Pages, Netlify) with full Python execution capability.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has low install friction, carries a permissive license, and solves a real problem—running Python in the browser without a server. It integrates cleanly into JupyterLite's build system and supports current Python versions. Install it if you need to build serverless Jupyter notebooks or interactive browser-based Python environments.
Install
jupyterlite-pyodide-kernel on PyPI
Before you install
Low install friction with a pure-Python wheel. Actively maintained with a release 3 days old and recent commits. Supports current Python versions (3.10–3.14).
Requires jupyterlite-core and a JupyterLite site structure to build; the kernel integrates as a labextension and CLI addon, not a standalone library.
License in practice
BSD-3-Clause is permissive; you may use, modify, and distribute this package with minimal restrictions, provided you retain the license notice.
Quickstart
pip install jupyterlite-pyodide-kernel
jupyter lite buildVerify before relying
- Whether the optional [lock] extra (pyodide-lock, uv) is necessary for typical workflows or only for advanced package management.
- Performance characteristics and browser compatibility across different environments.
- Whether pre-built Pyodide wheels cover the packages you need or if custom wheel management is required.
Package facts
| License | BSD-3-Clause permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesjupyterlite-corepkginfo |
| Maintenance | Actively maintained 3 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 161,433 / month, #10,635 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Framework :: JupyterFramework :: Jupyter :: JupyterLabFramework :: Jupyter :: JupyterLab :: 4Programming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14 |
Evidence: jupyterlite_pyodide_kernel-0.8.3-py3-none-any.whl
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See also jupyterlite-core · pyodide-lock · pyodide-py · jupyter-nbmodel-client · jupyterlab · voila · ipyflow-core · notebook · ipykernel · pyodide-cli