Rspack Has a Free API That Builds Webpack Projects 10x Faster With Rust

Rspack is a Webpack-compatible bundler written in Rust. Drop-in replacement — same config format, same plugin API, same loaders. Just 10x faster.

Quick Start

npm install -D @rspack/core @rspack/cli

// rspack.config.js — looks exactly like webpack.config.js
module.exports = {
  entry: './src/index.js',
  output: { filename: 'bundle.js' },
  module: {
    rules: [
      { test: /\.tsx?$/, use: 'builtin:swc-loader' },
      { test: /\.css$/, use: ['style-loader', 'css-loader'] }
    ]
  }
}

Speed Comparison

Bundler	Cold Build	HMR
Webpack	30s	1-5s
Rspack	3s	<100ms
Vite	2s (dev)	<50ms

Webpack Compatibility

Most webpack plugins and loaders work with Rspack:

• css-loader, style-loader, postcss-loader
• html-webpack-plugin
• mini-css-extract-plugin
• Most custom loaders

Migration from Webpack

1. Install Rspack
2. Rename webpack.config.js to rspack.config.js
3. Replace webpack imports with @rspack/core
4. Run rspack build

That's it for most projects.

Built-in Features (No Extra Plugins)

• TypeScript (via SWC)
• CSS Modules
• Asset modules
• Tree shaking
• Code splitting

The Bottom Line

If you have a large Webpack project and can't migrate to Vite, Rspack gives you 10x speed with minimal config changes.

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