DevTools for Rolldown

DevTools for Rolldown (@vitejs/devtools-rolldown) is a built-in integration that analyses Rolldown production builds in Vite 8+. It ships with Vite DevTools.

What it does

Insights into a Rolldown-powered build:

• Module analysis — visualise module graphs, dependencies, and transformation flows.
• Plugin insights — inspect plugin hook costs and processed modules.
• Chunk & asset analysis — explore build output through list, graph, treemap, and flamegraph views.
• Package detection — surface duplicated packages and dependency sizes.
• Session compare — diff bundle changes across builds.

See Features for a detailed walkthrough with screenshots.

Getting started

DevTools for Rolldown is enabled automatically once Vite DevTools is set up. Follow Getting Started to install and configure Vite DevTools, then run a build — the Rolldown panels appear in the dock.