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Procedure for Obtaining HAR Files

Overview

This article explains the procedures for obtaining HAR data (network logs) used for troubleshooting in each web browser.

Notes

  1. The content of this article is based on product specifications as of August 2026 and is subject to change without notice.
  2. The specifications in this article are based on each browser's specifications, so item names and other details may differ due to specification changes.

Procedure

Google Chrome
  1. Open Google Chrome on your PC.
  2. Open the web page for which you want to obtain HAR data.
  3. Right-click anywhere on the page and select "Inspect" from the context menu.
  4. The Chrome Developer Tools will open. Click the "Network" tab.
  5. If the "Record" button (small circle) at the top left of the Developer Tools is gray, click it.
    It will turn red to indicate that network requests are being recorded.
  6. Operate the web page to reproduce the issue.
  7. After reproducing the issue, click the "Stop" button (small square) in the Developer Tools to stop recording network activity.
  8. You can check the captured network requests and data in the "Network" tab.
  9. Click the "Export HAR" (download button) on the toolbar.
    Select a save location and save the file with an appropriate file name.
Mozilla Firefox
  1. Open Mozilla Firefox on your PC.
  2. Open the web page for which you want to obtain HAR data.
  3. Right-click anywhere on the page and select "Inspect" from the context menu.
  4. The Firefox Developer Tools will open. Click the "Network" tab.
    * Recording will start automatically.
  5. Operate the web page to reproduce the issue.
  6. Right-click anywhere in the "Network" tab and select "Save All As HAR".
    Select a save location and save the file with an appropriate file name.
Microsoft Edge
  1. Open Microsoft Edge on your PC.
  2. Open the web page for which you want to obtain HAR data.
  3. Right-click anywhere on the page and select "Inspect with Developer Tools" from the context menu.
  4. The Edge Developer Tools will open. Click the "Network" tab.
    * If not visible, you can open "Network" from the + button.
  5. If the "Record" button (small circle) at the top left of the Developer Tools is gray, click it.
    It will turn red to indicate that network requests are being recorded.
  6. Operate the web page to reproduce the issue.
  7. After reproducing the issue, click the "Stop" button (small square) in the Developer Tools to stop recording network activity.
  8. You can check the captured network requests and data in the "Network" tab.
  9. Click the down arrow (download button) in the "Network" tab.
    Select a save location and save the file with an appropriate file name.

Translation Disclaimer

This article has been automatically translated from the original Japanese version for your convenience.
While we strive to ensure accuracy, we cannot guarantee its reliability or completeness.

In the event of any discrepancies or questions regarding the content, the official Japanese version shall prevail.