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Creating a HAR File

  • Updated

This article explains how to create a HAR file in your browser.

In some cases, Hornetsecurity Support may ask you for a HAR file to analyze a reported issue in more detail. A HAR file contains recorded network requests from the browser. This allows Support to determine which requests were sent and answered when the error occurred.

Important security notice!

A HAR file may contain sensitive data, such as:

  • Login credentials
  • Session tokens
  • Cookies
  • Personal data
  • Content from form fields

Remove sensitive data from the HAR file before sending it to Hornetsecurity.

To do this, open the HAR file with a text editor and search for terms such as password, token, cookie, or authorization. Replace sensitive values with placeholders, for example *****.

Chrome

  1. Open Chrome and go to the page where the problem occurs.
  2. Look for the ⋮ button and select More tools > Developer tools. Alternatively, press the F12 key on your keyboard.
  3. In the window that appears, select the Network tab. You must leave the menu open while reproducing the problem.
  4. Before starting the recording, click the small icon next to the red recording icon once to delete previously recorded events.
  5. Locate the round recording button in the upper-left corner of the tab and make sure it is red. If it is gray, click the button once to start recording.
  6. If this is not the case, select the Preserve log checkbox.
  7. Click the button with the crossed-out circle to delete all existing logs from the “Network” tab.
  8. Reproduce the problem while the network requests are being recorded.
  9. Click the download button, Export HAR, to download the file and save it on your computer: Save with Content as HAR . Alternatively, right-click anywhere in the Name column and select Save all as HAR with content

     

  10. Important: Remove your personal login credentials from the file. To do this, open the HAR file with a text editor and search for

    "password". Locate your password in plain text and replace it with a placeholder (e.g., "*****"). Save the file.
  11. You're done! Please send us the HAR file so that we can continue the analysis.

Below you will find a short animation showing the steps for retrieving a HAR file in Chrome.

Firefox

  1. Open Firefox and go to the page within the Control Panel where the problem occurs.
  2. Select the Firefox menu (three horizontal, parallel lines) in the upper-right corner of your browser window, and then select More tools > Web Developer Tools. Alternatively, press the F12 key on your keyboard.
  3. In the window that appears, select the Network Monitor tab. You must leave the menu open while reproducing the problem. 
  4. Clear the current log by clicking the trash can icon .
  5. Reproduce the problem while the network requests are being recorded.
  6. Right-click anywhere below the File column and click Save All As HAR.

     
  7. Save the HAR file in a suitable location.

  8. Important: Remove your personal login credentials from the file. To do this, open the HAR file with a text editor and search for

    "password". Locate your password in plain text and replace it with a placeholder (e.g., "*****"). Save the file.
  9. You're done! Please send us the HAR file so that we can continue the analysis.

Below you will find a short animation showing the steps for retrieving a HAR file in Firefox.

Safari

  1. Open Safari and go to the Develop menu. If you do not see the Develop menu, follow the instructions in this article in the Safari User Guide: Use the developer tools in the Develop menu in Safari on Mac.
  2. Select Show Web Inspector. Alternatively, press ⌥ + ⌘ + I
  3. Clear the current log by clicking the trash can icon .
  4. Click the Network tab. It must remain open while you reproduce the problem.
  5. Reproduce the problem while the network requests are being recorded.
  6. Click the Export icon and save the HAR file.
    Safari-Exportprotokolle

  7. Important: Remove your personal login credentials from the file. To do this, open the HAR file with a text editor and search for

    "password". Locate your password in plain text and replace it with a placeholder (e.g., "*****"). Save the file.
  8. You're done! Please send us the HAR file so that we can continue the analysis.

If you have problems generating a HAR file in Safari, read this article on the Safari Developer website: Web Inspector.

Edge

  1. Open Edge and go to the page where the problem occurs.
  2. Look for the button with the three horizontal dots and select More tools > Developer tools. Alternatively, press the F12 key on your keyboard.
  3. In the window that appears, select the Network tab. You must leave the menu open while reproducing the problem.
  4. Before starting the recording, click the small icon next to the red recording icon once to delete previously recorded events.
  5. Locate the round recording button in the upper-left corner of the tab and make sure it is red. If it is gray, click the button once to start recording.
  6. If this is not the case, select the Preserve log checkbox.
  7. Click the button with the crossed-out circle to delete all existing logs from the “Network” tab.
  8. Reproduce the problem while the network requests are being recorded.
  9. Click the download button, Export HAR, to download the file and save it on your computer: Save with Content as HAR . Alternatively, right-click anywhere in the Name column and select Save all as HAR with content

  10. Important: Remove your personal login credentials from the file. To do this, open the HAR file with a text editor and search for

    "password". Locate your password in plain text and replace it with a placeholder (e.g., "*****"). Save the file.
  11. You're done! Please send us the HAR file so that we can continue the analysis.

Below you will find a short animation showing the steps for retrieving a HAR file in Edge.

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