Suggest an editImprove this articleRefine the answer for “How to use Performance Insights in Chrome?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**Performance Insights** is a simplified, more visual version of the Performance tab in Chrome DevTools that helps you quickly understand what is slowing down a page, without deep timeline analysis. **Key point:** Performance Insights is a fast performance scanner for a page that shows, within a minute, exactly where the interface slows down and points toward optimizations.Shown above the full answer for quick recall.Answer (EN)Image**Performance Insights** is a simplified, more visual version of the Performance tab in Chrome DevTools. It helps you quickly understand what is slowing down a page, without deep timeline analysis. --- ### How to open it: 1. Open DevTools: `Ctrl+Shift+I` / `Cmd+Opt+I` 2. Go to the **Performance Insights** tab (if it's not visible, click `>>` on the right and pick it from the list) 3. Click the **Record** button (or reload the page) 4. Wait 5-10 seconds, the recording stops automatically --- ### What it shows: - **Key loading metrics** - FCP, LCP, CLS, TTI, TBT - **Events and bottlenecks** - blocking scripts, Layout Shifts, main thread delays - **Improvement recommendations** - what specifically slows down rendering (for example: "long tasks", "animations", "slow styles") --- ### Blocks in the interface: - **Main Thread Activity**: a visual scale showing heavy operations - **Details**: click on an event to get details: which function, how long it took, where it is in the code - **Web Vitals Timeline**: vertical markers for the moments of FCP, LCP, and so on - **Recommendations**: automatic optimization tips --- ### What it's good for: - quickly spotting problems without diving into the profiler - analyzing the impact of a specific script/component on rendering - diagnostics during layout work or before full profiling --- **Conclusion:** Performance Insights is a fast performance scanner for a page that shows, within a minute, exactly where the interface slows down and points toward optimizations. Good for quick checks and regular monitoring.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.