Rolldown

Rolldown is a fast JavaScript bundler written in Rust, designed to be a drop-in replacement for Rollup. It takes your JavaScript and related assets (like CSS and images) and packages them into optimized bundles that can be efficiently loaded in a web browser. Rolldown aims to improve build performance and provide a smoother development experience compared to existing JavaScript bundlers.

Visit the following resources to learn more:

• @official@Rolldown
• @official@Rolldown Docs
• @official@Getting Started
• @opensource@rolldown
• @article@Rolldown: why it matters
• @video@Alexander Lichter | Rolldown: How Vite bundles at the speed of Rust | ViteConf 2025