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Rsbuild
What it is
Rsbuild is a free, open-source build tool for web applications powered by Rspack. It supports project setup without required configuration and also provides a configurable build API. Rspack is the default bundler, while SWC transforms and minifies JavaScript and TypeScript. Framework plugins support React, Vue, Svelte, Solid, and Preact. Hot module replacement is enabled by default during development, and production builds enable JavaScript and CSS minification by default. Optional styling support includes Tailwind CSS and UnoCSS, along with Sass, Less, and Stylus preprocessing. Rsbuild works with most webpack plugins and all Rspack plugins, and offers first-class Module Federation support for micro-frontend development. Listed capabilities also include code splitting, tree shaking, source maps, and a plugin API. The software is released under the MIT license. The v2 quick start requires Node.js 20.19+ or 22.12+; v1 requires Node.js 18.12.0 or higher. Its documentation links to an online StackBlitz example and a Discord community. The documentation warns that allowing CORS from all origins can expose the development server, and that publicly deploying production source maps can create security risks.
For and against
For
- Free and open source under the MIT license.
- Framework plugins support five listed frameworks.
- Hot module replacement is enabled by default.
- Works with most webpack plugins and all Rspack plugins.
- Includes first-class Module Federation support.
Against
- V2 requires Node.js 20.19+ or 22.12+.
- V1 requires Node.js 18.12.0 or higher.
- Public production source maps can expose source code.
The verdict
Rsbuild combines a configurable build API with defaults for development and production, plus integrations for several frameworks and styling tools. Check its Node.js requirements and heed the documented CORS and source-map warnings when configuring a project.
Who it suits
Rsbuild suits developers building web applications who want Rspack-based tooling and framework plugins. Its Module Federation support may be relevant to teams developing micro-frontends.
Plans and prices
Free and open source
Free software · MIT license
Read 7 Oct 2026 · rsbuild.rs
On the record
- Bundler and compilation
- Rsbuild uses Rspack by default and uses SWC to transform and minify JavaScript and TypeScript code.rsbuild.rs · read 7 Oct 2026
- Configuration
- It supports zero-configuration project setup and offers a configurable build API.rsbuild.rs · read 7 Oct 2026
- Development
- Hot module replacement is enabled by default in development mode.rsbuild.rs · read 7 Oct 2026
- Frameworks
- Framework plugins support React, Vue, Svelte, Solid, and Preact.rsbuild.rs · read 7 Oct 2026
- Module Federation
- Rsbuild offers first-class support for Module Federation for developing micro-frontend applications.rsbuild.rs · read 7 Oct 2026
- Online example
- The documentation links to a StackBlitz example for trying Rsbuild online.rsbuild.rs · read 7 Oct 2026
- Production optimization
- JavaScript and CSS minification are enabled by default for production builds.rsbuild.rs · read 7 Oct 2026
- Publisher
- The site footer credits ByteDance Inc. and says Rsbuild is free and open source under the MIT license.rsbuild.rs · read 7 Oct 2026
- Purpose
- Rsbuild is a modern build tool for web applications, powered by Rspack.rsbuild.rs · read 7 Oct 2026
- Runtime requirement
- For Rsbuild v2, the quick start guide requires Node.js 20.19+ or 22.12+; Rsbuild v1 requires Node.js 18.12.0 or higher.rsbuild.rs · read 7 Oct 2026
- Security configuration
- The docs warn that enabling CORS for all origins can expose the development server and recommend an allowlist of trusted origins.rsbuild.rs · read 7 Oct 2026
- Security limitation
- The docs warn that publicly deploying production source maps can expose source code and create security risks.rsbuild.rs · read 7 Oct 2026
- Styling integrations
- The feature guide lists optional Tailwind CSS and UnoCSS support, along with Sass, Less, and Stylus preprocessing.rsbuild.rs · read 7 Oct 2026
- Support
- The Rsbuild introduction invites users to chat with the Rstack team and community on Discord.rsbuild.rs · read 7 Oct 2026
- Webpack compatibility
- Rsbuild is compatible with most webpack plugins and all Rspack plugins.rsbuild.rs · read 7 Oct 2026
