What is a Chrome Network Dump (HAR) and where do I find it?

Sometimes when you are troubleshooting with a support engineer, he/she may ask you to provide a Chrome Network Dump or HAR dump. This is nothing but an HTTP archive that records all the network requests made. This HAR dump can help the support engineer get a detailed view of your activity and resolve the problem you are facing.

Getting the HAR dump

  1. Go to the hamburger menu and navigate to More Tools > Developer Tools*

If you are using a Windows/ Linux machine, you can press ‘Ctrl+Shift+I’ or ‘F12’.

If you are using a Mac, you can press ‘Cmd+Shift+I’.

  1. Select the ‘Network’ tab and enable the ‘Preserve Log’ and ‘Disable Cache’ fields.
  2. Now visit the URL you are having problems with and attempt to reproduce the issue.
  3. Go back to the Developer Tools and right-click on any of the entries there and click on ‘Save as HAR with content’.

The resulting file is the HAR dump requested by the support engineer.

* Note that the Chromebook Best Practices Guide recommends blocking Developer Tools to ensure that users are unable to circumvent district policy or gain an unfair advantage over other students by reversing engineering Edtech applications that transmit insecure data or have confidential information hidden away in the code.


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