How do I create a HAR file?
About HAR files
If you are experiencing browser-related problems such as slow display, generate a HAR file to find details about the network requests sent by the browser when the problem occurred.
Creating a HAR file
Chrome
- Display the problematic page in Google Chrome.
- Right-click anywhere on the page and select [Inspect] from the dropdown menu.
- In the panel that appears at the bottom of the screen, click the [Network] tab.
- Find the round "Record" button in the upper left corner and verify that it is red. If the button is gray, click it once and it will turn red.
- Check the box next to "Preserve log".
- Click the "Clear" button (
) to erase all existing logs.
- Reproduce the problem in question.
- Then, right-click on the list at the bottom of the screen and select [Save as HAR with Content] to save the file.
Firefox
- Display the problematic page in Firefox.
- Click the hamburger menu icon (☰) in the upper right corner of the window and select More tools -> Web developer tools.
- In the panel that appears at the bottom of the screen, click the [Network] tab, and reproduce the problem.
- Note: The recording will start automatically, so execute this action in your browser.
- Verify that all actions have been generated in the Developer Network panel. Then, right-click anywhere under the "File" column and click [Save all as HAR File].
Microsoft Edge
- Display the problematic page in Microsoft edge.
- Right-click anywhere on the page and select [Inspect] from the dropdown menu.
- In the panel that appears at the bottom of the screen, click the [Network] tab.
- Find the round "Record" button in the upper left corner and verify that it is red. If the button is gray, click it once and it will turn red.
- Check the box next to "Preserve log".
- Click the "Clear" button (
) to erase all existing logs.
- Reproduce the problem in question.
- Then, right-click on the list at the bottom of the screen and select [Save all as HAR with Content] to save the file.
Note
- Due to due to browser specification changes and updates, browser item names and button positions may differ from the contents shown in this guide.
- For information on how to generate HAR files in other browsers, perform an internet search with the search phrase "generate HAR file in [browser name]".
- Note that HAR files contain personal data.
- When contacting Kuroco support, include the HAR file as an attachment in your support request.