Rspack Has a Free Webpack-Compatible Bundler — 10x Faster Builds Without Changing Your Config

Why Rspack?

Rspack is a Webpack-compatible bundler written in Rust. Drop it into existing Webpack projects for 5-10x faster builds — same config, same plugins, same loaders.

npm install @rspack/cli @rspack/core

rspack.config.js (Webpack-Compatible)

module.exports = {
  entry: './src/index.js',
  output: { filename: 'bundle.js', path: __dirname + '/dist' },
  module: {
    rules: [
      { test: /\.tsx?$/, use: 'builtin:swc-loader',
        options: { jsc: { parser: { syntax: 'typescript', tsx: true } } } },
      { test: /\.css$/, type: 'css' },
    ],
  },
  plugins: [new (require('@rspack/core').HtmlRspackPlugin)()],
}

Migration from Webpack

1. Replace webpack with @rspack/core in imports
2. Replace webpack-cli with @rspack/cli
3. Rename webpack.config.js to rspack.config.js
4. Most loaders/plugins work unchanged

Speed Comparison

Project	Webpack	Rspack
Dev start	12s	1.2s
HMR	500ms	50ms
Production	45s	5s

Rspack vs Vite vs Webpack

Feature	Rspack	Vite	Webpack
Speed	10x Webpack	Very fast	Baseline
Compat	Webpack API	Rollup API	Native
Migration	Drop-in	Rewrite	N/A
Ecosystem	Webpack plugins	Vite plugins	Massive

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