Using the Profiler Tab
Record renders, read flame graphs, and identify slow components.
Welcome
In this lesson you will use the React DevTools Profiler to record renders, read flame graphs, and identify which components are causing performance bottlenecks.
Opening the Profiler
Click the **Profiler** tab in React DevTools (next to Components). You will see a Record button (circle) and a Reload and Profile button. The profiler only works in development mode.