---
name: cis-ts-create-har
title: How do I generate a HAR file?
description: When diagnosing issues in IBM Cloud Internet Services, it's often necessary to capture a detailed record of your browser’s interaction with a web page. This record, called an HTTP Archive (HAR) file, logs requests and responses between your browser and the server. HAR files help IBM support engineers pinpoint performance issues, failed requests, and configuration problems.
last-updated: 2026-08-06
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/cis?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

# How do I generate a HAR file?
{: #generate-har-files}
{: troubleshoot}

When diagnosing issues in IBM Cloud Internet Services, it's often necessary to capture a detailed record of your browser’s interaction with a web page. This record, called an HTTP Archive (HAR) file, logs requests and responses between your browser and the server. HAR files help IBM support engineers pinpoint performance issues, failed requests, and configuration problems.
{: shortdesc}

HAR files can contain sensitive data such as cookies, authentication tokens, passwords, or payment details. Before sharing the file with IBM support, carefully review its contents in a text editor and remove any confidential information.
{: important}

You’re experiencing unexpected behavior, errors, or latency when using CIS, and IBM support has requested a HAR file to investigate the issue further.
{: tsCauses}

Use the following sections to generate HAR files in Firefox, Chrome, Safari, or Edge browsers.
{: tsResolve}

## Generating a HAR file in Firefox
{: #har-firefox}

To generate a HAR file:

1. In Firefox, go to the page within CIS where you are experiencing trouble.
1. Select the Firefox menu (three horizontal parallel lines) at the upper-right of your browser window, then select **Developer > Network**.
1. The Developer Network Tools open as a docked panel at the side or bottom of the browser window. Click the **Network** tab.
1. The recording starts automatically after you start performing actions in the browser.
1. Refresh the CIS page that you are on, or go through the steps to reproduce the problem you've been experiencing while Firefox is recording activity.
1. After you have reproduced the issue, right-click anywhere under the **File** column in the docked panel and click **Save All As HAR**.
1. Save the HAR file in a location you choose, and send the file to [IBM support](https://cloud.ibm.com/docs/cis?topic=cis-gettinghelp&format=markdown).

## Generating a HAR file in Chrome
{: #har-chrome}

To generate a HAR file:

1. In Chrome, go to the page within CIS where you are experiencing trouble.
1. Select the Chrome menu (three vertical dots) at the top-right of your browser window, then select **Tools > Developer Tools**.
1. The Developer Tools open as a docked panel at the side or bottom of the browser window. Click the **Network** tab.
1. Select the option **Preserve log**.
1. The recording starts automatically, and a red **Record network log** icon appears at the top left of the Network tab. If not, click the black **Stop recording network log** icon to start recording activity in your browser.
1. Refresh the CIS page you are on or go through the steps to reproduce the problem you've been experiencing while Chrome is recording activity.
1. After you have successfully reproduced the issue while recording, right-click any of the items within the Network tab and select **Save all as HAR with Content** to save a copy of the activity that you recorded.
1. Save the HAR file in a location you choose, and send the file to [IBM support](https://cloud.ibm.com/docs/cis?topic=cis-gettinghelp&format=markdown).

## Generating a HAR file in Safari
{: #har-safari}

To generate a HAR file:

1. In Safari, first check to see if you have a **Develop** menu at the top of the page. If not, go to **Safari > Preferences > Advanced** and select **Show Develop Menu in menu bar**.
1. In Safari, go to the page within CIS where you are experiencing trouble.
1. Navigate to **Develop > Show Web Inspector**.

    This menu option is not available until you browse somewhere beyond Safari's starting page. The Web Inspector opens as a docked panel at the bottom of Safari.
    {: note}

1. Click the **Network** tab.
1. Refresh the CIS page that you are on or go through the steps to reproduce the problem you've been experiencing while Safari is recording activity.
1. After you have reproduced the issue, Control + click the resource that you want to capture the HAR file for, and click **"Export HAR"**.
1. Save the HAR file in a location you choose, and send the file to [IBM support](https://cloud.ibm.com/docs/cis?topic=cis-gettinghelp&format=markdown).

## Generating a HAR file in Microsoft Edge
{: #har-edge}

To generate a HAR file:

1. In Microsoft Edge, go to the page within CIS where you are experiencing trouble.
1. Click the Edge menu (three vertical dots) at the top-right of your browser window, then select **More Tools > Developer Tools**.
1. Select the Network tab, then click **Record** in the upper left corner of the tab and verify that it is recording. If it is not yet recording, click **Record** to start recording.
1. Check the box next to **Preserve Log**.
1. Select **Clear** to remove any existing logs from the **Network** tab.

    Do not close the Developer Tools panel. This ends the recording and the HAR file will be lost.
    {: note}

1. Refresh the CIS page you are on or go through the steps to reproduce the problem you've been experiencing while Edge is recording activity.
1. After you have reproduced the issue, right-click anywhere on the grid of network requests and choose **Save as HAR with Content**.
1. Save the HAR file in a location you choose, and send the file to [IBM support](https://cloud.ibm.com/docs/cis?topic=cis-gettinghelp&format=markdown).