Performance engineering
How to Use the CrUX Report Dashboard
This article summarizes the key steps for using a Chrome User Experience Report dashboard to inspect field performance data.
Step 1: Access the Dashboard
Open the CrUX Dashboard in your browser. The report presents aggregated user-experience data collected by Google Chrome.
Step 2: Select a Date Range
Choose the timeframe you want to analyze. Comparing different ranges helps you understand trends and spot regressions.
Step 3: Filter by Device and Country
Use the filters to focus on specific devices (e.g., phone or desktop) and countries. This allows you to see how user experience varies across contexts.
Step 4: Complete the Form
Fill out all fields to refine your search and ensure the results are accurate. Incomplete data may hide important issues.
Step 5: Analyze the Metrics
Once the dashboard loads, review the core web vital metrics:
- TTFB – Time to First Byte; measures server responsiveness.
- FCP – First Contentful Paint; measures when the first content appears.
- INP – Interaction to Next Paint; measures overall responsiveness.
- LCP – Largest Contentful Paint; measures when the largest content loads.
- CLS – Cumulative Layout Shift; measures visual stability.
Each metric is color‑coded (green, orange or red) to indicate whether performance is good, needs improvement or poor.
Conclusion
Using the CrUX Dashboard helps you identify and prioritize performance issues based on field data.