---
id: jupyter-builder
version: "1.2.2"
license: BSD-3-Clause AND MIT AND ISC
license_treatment: permissive
maintenance: active
---

# jupyter-builder — JupyterLab build tools

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install jupyter-builder
uv add jupyter-builder
poetry add jupyter-builder

## Description

# Jupyter Builder

[![Jupyter Builder Tests](https://github.com/jupyterlab/jupyter-builder/actions/workflows/builder-tests.yml/badge.svg)](https://github.com/jupyterlab/jupyter-builder/actions/workflows/builder-tests.yml)
[![version on npm](https://img.shields.io/npm/v/@jupyter/builder.svg)](https://www.npmjs.com/package/@jupyter/builder)
[![version on PyPI](https://img.shields.io/pypi/v/jupyter-builder.svg)](https://pypi.org/project/jupyter-builder/)
[![version on conda-forge](https://img.shields.io/conda/vn/conda-forge/jupyter-builder.svg)](https://anaconda.org/conda-forge/jupyter-builder)

Build tools for JupyterLab extensions — extracted from the core [JupyterLab](https://github.com/jupyterlab/jupyterlab) codebase to be maintained and used independently.

## Installation

```bash
pip install jupyter_builder
```

## CLI

### `build`

Compile the extension JavaScript assets for consumption by a Jupyter app.

```bash
jupyter-builder build <path/to/extension>
```

### `develop`

Install extension assets in development mode (analogous to `pip install -e`). Uses a symlink by default.

```bash
jupyter-builder develop <path/to/extension>
```

### `watch`

Automatically rebuild...

## AI interpretation — verify before relying

Provides build and development tools for JupyterLab extensions, including CLI commands to compile JavaScript assets, install extensions in development mode, and watch for file changes during development.

Verdict: A newly extracted, actively maintained tool for JupyterLab extension development with permissive licensing and minimal dependencies. No known vulnerabilities and low install friction make it a safe choice for extension developers targeting JupyterLab 4.

[View on SkillFed](https://skillfed.io/packages/jupyter-builder) · [View on PyPI](https://pypi.org/project/jupyter-builder/)