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Webpackbar

Elegant ProgressBar and Profiler for Webpack 3 , 4 and 5

From unjs·Updated June 7, 2026·View on GitHub·

Elegant ProgressBar and Profiler for [Webpack](https://webpack.js.org/) and [Rspack](https://rspack.dev/). The project is written primarily in TypeScript, distributed under the MIT License license, first published in 2018. It has gained significant community traction with 2,088 stars and 66 forks on GitHub. Key topics include: bundler, javascript, node, profile, progressbar.

Latest release: v7.0.0
November 6, 2024View Changelog →
<!-- automd:badges packagephobia -->

npm version
npm downloads

<!-- /automd --> <div align="center"> <!-- replace with accurate logo e.g from https://worldvectorlogo.com/ --> <img width="200" height="200" hspace="25" src="./assets/logo.svg"> <a href="https://webpack.js.org/"> <img width="200" height="200" hspace="25" src="https://cdn.rawgit.com/webpack/media/e7485eb2/logo/icon-square-big.svg"> </a> <p>Elegant ProgressBar and Profiler for [Webpack](https://webpack.js.org/) and [Rspack](https://rspack.dev/). </p> </div>

✔ Display elegant progress bar while building or watch

✔ Support of multiple concurrent builds (useful for SSR)

✔ Pretty print filename and loaders

✔ Windows compatible

✔ Fully customizable using reporters

✔ Advanced build profiler

<div align="center"> <br> <img src="./assets/screen1.png" width="600px"> <p>Multi progress bars</p> <br> </div> <div align="center"> <br> <img src="./assets/screen2.png" width="600px"> <p>Build Profiler</p> <br> </div> <h2 align="center">Getting Started</h2>

To begin, you'll need to install webpackbar:

<!-- automd:pm-i -->
sh
# ✨ Auto-detect npx nypm install webpackbar # npm npm install webpackbar # yarn yarn add webpackbar # pnpm pnpm install webpackbar # bun bun install webpackbar # deno deno install webpackbar
<!-- /automd -->

Then add the reporter as a plugin to your webpack config (make sure webpack peer dependency is installed).

webpack.config.mjs

js
import WebpackBar from "webpackbar"; export default { entry: "./src/entry.js", plugins: [ new WebpackBar({ /* options */ }), ], };

For using with Rspack, you can use webpackbar/rspack (make sure @rspack/core peer dependency is installed).

rspack.config.mjs:

js
import WebpackBar from "webpackbar/rspack"; export default { entry: "./src/entry.js", plugins: [ new WebpackBar({ /* options */ }), ], };
<h2 align="center">Options</h2>

name

  • Default: webpack

Name.

color

  • Default: green

Primary color (can be HEX like #xxyyzz or a web color like green).

profile

  • Default: false

Enable profiler.

fancy

  • Default: true when not in CI or testing mode.

Enable bars reporter.

basic

  • Default: true when running in minimal environments.

Enable a simple log reporter (only start and end).

reporter

Register a custom reporter.

reporters

  • Default: []

Register an Array of your custom reporters. (Same as reporter but array)

<h2 align="center">Custom Reporters</h2>

Webpackbar comes with a fancy progress-bar out of the box.
But you may want to show progress somewhere else or provide your own.

For this purpose, you can provide one or more extra reporters using reporter and reporters options.

NOTE: If you plan to provide your own reporter, don't forget to setting fancy and basic options to false to prevent conflicts.

A reporter should be instance of a class or plain object and functions for special hooks. It is not necessary to implement all functions, webpackbar only calls those that exists.

Simple logger:

js
const logger = { start(context) { // Called when (re)compile is started }, change(context) { // Called when a file changed on watch mode }, update(context) { // Called after each progress update }, done(context) { // Called when compile finished }, progress(context) { // Called when build progress updated }, allDone(context) { // Called when _all_ compiles finished }, beforeAllDone(context) {}, afterAllDone(context) {}, };

context is the reference to the plugin. You can use context.state to access status.

Schema of context.state:

js
{ start, progress, message, details, request, hasErrors; }
<h2 align="center">License</h2>

MIT

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This article is auto-generated from unjs/webpackbar via the GitHub API.Last fetched: 6/16/2026