DevTools for Rolldown

DevTools for Rolldown (@vitejs/devtools-rolldown) is a built-in integration that provides comprehensive build analysis for Vite projects using Rolldown. It comes included with Vite DevTools out of the box.

WARNING

DevTools for Rolldown currently only supports build mode of Vite 8+. Dev mode and Vite versions under 8 are not supported yet.

What It Does

DevTools for Rolldown gives you deep insights into your Rolldown-powered build process:

• Module Analysis — Visualize module graphs, dependencies, and transformation flows
• Plugin Insights — Inspect plugin hook costs and processed modules
• Chunk & Asset Analysis — Explore build output with list, graph, treemap, and flamegraph views
• Package Detection — Detect duplicated packages and analyze dependency sizes
• Session Compare — Compare bundle changes across builds

See the Features page for a detailed walkthrough with screenshots.

Getting Started

DevTools for Rolldown is automatically available when you set up Vite DevTools. Follow the Getting Started guide to install and configure Vite DevTools, then the Rolldown build analysis panels will appear in the dock.