How to generate a HAR file

Available Languages

Updated:September 30, 2026
Document ID:SPLK050042

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Applicability

Splunk Cloud Splunk Enterprise Splunk Observability Other Splunk Products supporting Web GUI.

Description

A HAR file records HTTP traffic on the browser, this file helps to identify problems related to Splunk Web GUI, especially when there are HTTP response status codes.

This data is extremely helpful to debug issues related with GUI error codes and communication (including SAML). 

Supported browsers
Chrome
Firefox
Edge
Safari

Resolution

Chrome

1. Navigate to Splunk Web GUI
2. Click the menu icon > More Tools > Developer Tools or press F12 to open Developer Tools.
3. Select Network and turn on "Preserve Log".
4. The red circle at the top left of the Developer tools window means it's ready to record.
5. Reproduce the issue to start recording HTTP traffic.
6. Right-click the results and select Save all as HAR with content.
7. Save the HAR file.
8. Upload the file to a ticket.


Firefox

1. Navigate to Splunk Web GUI
2. Click menu > More Tools > Web Developer Tools.
3. Select Network and turn on "Persist Logs"
4. Select the play icon within the Network panel to start recording
5. Reproduce the issue to start recording HTTP traffic.
6. Right-click on the results and select "Save all as HAR"
8. Save the HAR file.
9. Upload the file to a ticket.


Edge


1. Navigate to Splunk Web GUI
2. Click Menu (three dots in the top right-hand corner) > More Tools > Developer Tools
3. Open the Network tab.
4. On the top left of the Network tab, make sure it's in red as this indicates it's ready to record.
5. Make sure the "Preserve log" is turned on.
6. Click the concentric circle button to start recording the session
7. Reproduce the issue to start recording HTTP traffic.
8. Right-click anywhere on the results and choose "Save as HAR with Content"
9. Save the HAR file.
10. Upload the file to a ticket.
 

Safari

1. To enable the Developers tool, navigate to Safari > Settings > Advanced > select Show Develop menu in the menu bar
2. From the Safari menu, select Develop > Show Web Inspector
3. Select the Network tab and turn on "Preserve Log" within the Network tab
4. Reproduce the issue to start recording HTTP traffic.
5. Click on the Export button on the top right corner of the page.  (If the Export button greyed out, please try refreshing the page)
6. Save the HAR file.
7. Upload the file to a ticket.
 


Google Admin Toolbox HAR Analyzer

Revision History

Revision Publish Date Comments
1.0
30-Sep-2026
Initial Release

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