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Generating a HAR file for Looker Support

Posted 3 weeks ago
vitor_leepkaln
Staff
Reply posted on --/--/---- --:-- AM

If you're working with Looker Support to troubleshoot an issue that might be related to the network, providing a HAR file can be invaluable. HAR files capture detailed logs of network requests, responses, and loading times within your browser, giving our support team crucial insights.

Below steps for generating HAR files in Chrome and Firefox:

Generating a HAR File in Google Chrome

1. Open Developer Tools:

  • Right-click anywhere on the webpage you're troubleshooting and select "Inspect".
  • Alternative: Press F12 on your keyboard.

2. Navigate to the Network tab: Find the "Network" tab within the Developer Tools window.

3. Enable Recording:

  • Ensure the "Preserve log" checkbox is selected.
  • Click the circular record button (it should turn red to indicate recording).

4. Reproduce the Issue: Perform the actions on the website that lead to the problem you're experiencing.

5. Export HAR File:

  • Right-click within the list of network requests.
  • Choose "Save as HAR with Content". Select a location, give your file a descriptive name, and click "Save".


Generating a HAR File in Mozilla Firefox

1. Open Developer Tools:

Click the hamburger menu (three horizontal lines) in the top-right corner.
Select "More tools" and then "Web Developer Tools".
Alternative: Press Ctrl+Shift+I (Windows/Linux) or Cmd+Option+I (macOS)

2. Go to the Network Tab: Locate the "Network" tab in the Developer Tools window.

3. Start Recording: The browser will initiate recording as you navigate. If a pause button is visible, click it to begin recording.

4. Reproduce the Issue: Carry out the steps on the website that reproduce the issue.

5. Export HAR File:

  • Right-click anywhere within the list of network requests.
  • Select "Save All as HAR". Choose a location, name your HAR file, and click "Save".

Important Notes:

  • For complex issues, try to isolate the steps as much as possible, keeping your HAR file relatively focused.
  • HAR files might contain sensitive data (e.g., passwords, cookies). Please review the files before sharing and consider redacting if needed.
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