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Generating a HAR file for troubleshooting complex issues
Generating a HAR file for troubleshooting complex issues
Philippa Corrick avatar
Written by Philippa Corrick
Updated over a week ago

When troubleshooting complex issues, it is sometimes necessary for our customer service team to obtain additional information about the network requests that are generated in your browser while an issue occurs. A customer service team member may request that you record a HAR file, or a log of network requests, while that issue is occurring and then provide that to them for further analysis.

To generate the HAR file for Chrome

Open Google Chrome and go to the page where the issue is occurring.

Press control-shift-c 

From the panel opens at the bottom of your screen, select the Network tab.

Look for a round Record button in the upper left corner of the Network tab, and make sure it is red. If it is grey, click it once to start recording.

Check the box next to Preserve log .

Click the Clear button (round button with line going through ) to clear out any existing logs from the Network tab.

Now try to reproduce the issue that you were experiencing before, while the network requests are being recorded.

Once you have reproduced the issue, right click anywhere on the grid of network requests, select Save as HAR with Content , and save the file to your computer.

For Firefox:
Starting with Firefox 41, HAR files can be created without any additional extension.

  • Start Firefox Developer Tools in Network mode (Top right menu > Developer > Network, or ctrl-shift-Q)

  • Reproduce the issue

  • Save the capture by right-clicking on the grid and choosing "Save all as HAR"

  • Export the capture to a HAR file

For Internet Explorer/Edge
Edge natively produces HAR files. See detailed instructions in the Microsoft site

  • Open the Network tool in F12 developer tools

  • Reproduce the issue

  • Export captured traffic as a HAR (CTRL + S)

For Internet Explorer, you will need to use: HttpWatch .

  • Download and Install HttpWatch

  • Start the HttpWatch capture right before reproducing the behavior you want to study

  • Stop the HttpWatch capture right after reproducing the behavior to study

  • Export the capture to HAR format

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