How to Analyze Network Requests in Chrome DevTools

· Category: VS Code & Developer Tools

Short answer

The Network tab records every HTTP request made by the page. It shows timing, status codes, headers, and response bodies for debugging and performance analysis.

Steps

  1. Open DevTools and click the Network tab.
  2. Reload the page to capture the full load sequence.
  3. Click any request to view headers, preview, response, and timing details.
  4. Use filters to show only XHR, JS, CSS, or Img requests.
  5. Export the network log as a HAR file for sharing or later analysis.

Tips

  • Disable cache while DevTools is open to see fresh server responses.
  • Throttle the network to simulate slow connections.
  • The Waterfall column reveals which resources block rendering.

Common issues

  • Some requests may be missing if they finish before DevTools opens.
  • Large response bodies may be truncated unless you click to view them.