How to Collect a HAR File.

Last updated: August 11, 2026

HAR files are helpful for the Redpanda Support and Engineering teams to troubleshoot browser or front-end related issues.  The exact method to collect one depends on the browsers being used.  

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Google Chrome - HAR Collection

  1. Close all incognito windows in Google Chrome.
  2. Open a new incognito window in Google Chrome.
  3. Go to View > Developer > Developers Tools.
  4. In the Developer Tools pane, choose the Network tab.
  5. Check the Preserve Log checkbox to record all interactions.
  6. Visit the page and complete the steps that trigger the issue.
  7. Choose the Network tab.
  8. Click the down arrow to export the HAR file.
  9. Save the HAR file.

Firefox - HAR Collection

  1. Close all private windows in Firefox.
  2. Open a new private window in Firefox.
  3. Go to Tools > Developer > Network or ctrl-shift-E.
  4. Click the Network tab and choose Persist Logs.
  5. Visit the page and complete the steps that trigger the issue.
  6. Choose the Network tab and right click and then select Save All As Har.
  7. Save the HAR file.

Microsoft Edge - HAR Collection

  1. Close all InPrivate windows in Microsoft Edge.
  2. Open a new InPrivate window (Ctrl + Shift + N).
  3. Go to Settings and more (the ... icon) then choose More Tools > Developer Tools.
  4. Start a profiling session on the Network tab of the Developer Tools toolbar.
  5. Visit the page and complete the steps that trigger the issue.
  6. Select Export as HAR (Ctrl+S) and save the HAR file.

Safari - HAR Collection

  1. Ensure that Show Develop menu in menu bar checkbox is checked under Safari > Preferences > Advanced.
  2. Choose File > Open New Private Window.
  3. Choose Show Web Inspector in the Developer menu, then navigate to the Network tab.
  4. To the right of All near the top-left of the Web Inspector, click the Filter button and choose Preserve Log.
  5. Visit the web page where the issue occurs.
  6. Choose Develop > Show Web Inspector. The Web Inspector window appears.
  7. Complete the steps on the page that trigger the issue.
  8. Select the Network tab.
  9. Click Export on the upper right side of the pane.
  10. Save the HAR file.

If you have questions, please ask via our Support portal at https://support.redpanda.com/hc/en-us