react-devtools-plus

Debug React re-renders by recording a render profiling timeline to inspect render durations and update behavior. The mirrored Fiber tree helps pinpoint which specific component renders and commits are causing performance bottlenecks in your application.

Fiber tree mirroring visualizes the live React component hierarchy by reflecting Fiber roots in real time. This mechanism allows you to interactively inspect props, state, and hooks of your components directly within a debugging UI during development.

Yes, the React debugging overlay works with Vite or Webpack. You must install the corresponding Vite or Webpack plugin into your development project to enable the dev-only overlay UI and access the debugging features.

The best way to inspect React props and hooks without leaving your app is using a keyboard-first debugging overlay. Toggle the inline overlay with Alt or Option + Shift + D to inspect the Fiber tree and profile renders quickly.

Yes, this React profiling tool supports development-time debugging and performance profiling for React 16 through 19 applications. It provides render timeline analysis and asset inspection workflows across these React versions.

To find out why components render too often, use the render profiling timeline to inspect render timings and update behavior. The mirrored Fiber tree allows you to trace which props or state changes trigger unnecessary renders and commits.