Capture web session traffic

Using Chrome DevTools

Capturing live ad requests and Ad Manager interactions using HTTP network sessions can be a powerful troubleshooting exercise. You can help expedite issue resolution time by providing network sessions to Ad Manager support.

Learn about capturing mobile session traffic.


  • A desktop or laptop computer
  • Chrome browser (other major browsers also support capturing web session traffic)

Using Google Chrome

Chrome's DevTools can capture all traffic and save it to a HAR file. Here's how to extract the HAR file in Chrome:

Chrome DevTools interface showing download button and option to "Save all as HAR with content"
  1. Right-click in the browser window or tab and select Inspect.
  2. Click the Network tab in the panel that appears.
  3. Click the download button Download ("Export HAR" appears when you hold the pointer over it).
  4. Name the file.
  5. Click Save.

Content for all requests on the page are saved in the same HAR file.

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