Rspack vs webpack
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A fast Rust-based web bundler that aims to be a drop-in replacement for webpack.
Open source · MIT
A JavaScript module bundler that packs many files into a few optimized assets for the browser.
The short answer
Choose Rspack if you need…
- Teams with a large webpack project who want faster builds without rewriting their config
- Developers who want fast dev-server startup and hot module replacement on big codebases
- Projects that rely on webpack plugins or loaders and need compatibility
- Teams building micro-frontends that use Module Federation
Choose webpack if you need…
- Frontend developers building single-page or multi-page web apps
- Teams that need code splitting to reduce initial page load time
- Projects that mix CommonJS, AMD, and ES module code
- Developers who want to preprocess CSS, images, or other assets as part of the build
Side-by-side
| Rspack | webpack | |
|---|---|---|
| Type | Dev tool | Dev tool |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 13k | 66k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | Rust | JavaScript |
| Last code update | 4 days ago | 4 days ago |
What each one is
Rspack
Rspack is a tool that takes your JavaScript, TypeScript and other web source files and bundles them into files a browser can load. It is written in Rust for speed and uses a modernized version of the webpack API, so projects already built on webpack can be moved over with less rework. The README says it supports webpack plugins and loaders, Module Federation, and built-in production optimizations such as tree shaking and minification.
webpack
Webpack reads your project's JavaScript files and the modules they import, then combines them into a small number of bundle files that a browser can load. It can also split the app into chunks that load on demand, and uses loaders to handle other file types such as CSS, images, or TypeScript through plugins that run during the build.
Best for
Rspack
- Teams with a large webpack project who want faster builds without rewriting their config
- Developers who want fast dev-server startup and hot module replacement on big codebases
- Projects that rely on webpack plugins or loaders and need compatibility
- Teams building micro-frontends that use Module Federation
webpack
- Frontend developers building single-page or multi-page web apps
- Teams that need code splitting to reduce initial page load time
- Projects that mix CommonJS, AMD, and ES module code
- Developers who want to preprocess CSS, images, or other assets as part of the build
Strengths
Rspack
- The README states builds are fast, with incremental compilation supporting hot module replacement
- Compatible with the webpack plugin and loader ecosystem, which eases migration
- Part of the broader Rstack toolchain (Rsbuild, Rspress, Rstest, and others) listed in the README
webpack
- Mature and widely used, with about 66k GitHub stars and an active release history
- Plugin and loader system lets it handle many file types beyond JavaScript
- Supports ES modules, CommonJS, and AMD in the same build
Not ideal for
Rspack
- People who only need a simple static page; a lighter tool may be enough, and the README does not compare simplicity against alternatives
- Non-developers, since it is a build tool that assumes familiarity with JavaScript project setup
- Projects that need a feature the README does not mention; check the docs for compatibility details first
webpack
- Developers who only need a simple static page with no build step, since the setup adds configuration overhead
- Anyone needing to support IE8 or older browsers without adding polyfills, because the README says these are not supported
Trade-offs
Rspack
- The README is truncated and does not give enough detail on which webpack features are fully supported
- Migration effort depends on how heavily a project uses custom webpack plugins; the README does not quantify this
- Speed claims are not backed by numbers in the README; it points to external benchmark pages instead
webpack
- Configuration can be complex for beginners, and the README points to separate guides for setup
- Some built-in CSS and HTML features are described as experimental, so plugins may still be needed
Getting started
Rspack
Clone the repository
git clone https://github.com/web-infra-dev/rspackwebpack
Install with npm
npm install --save-dev webpackInstall with yarn
yarn add webpack --devFrequently asked questions
What is the difference between Rspack and webpack?
Rspack: A fast Rust-based web bundler that aims to be a drop-in replacement for webpack. webpack: A JavaScript module bundler that packs many files into a few optimized assets for the browser. Rspack suits teams with a large webpack project who want faster builds without rewriting their config, while webpack suits frontend developers building single-page or multi-page web apps.
Are Rspack and webpack free?
Rspack: Free and open source. webpack: Free and open source.
Is Rspack or webpack more popular?
webpack has more GitHub stars (66k) than Rspack (13k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Rspack and webpack?
Other options people compare them with include Vite, esbuild, Parcel, Madge, Browserify.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.