How to generate HAR in Firefox

1

Start by opening Firefox.

2

In Firefox, go to the page within our website where you are experiencing trouble.

3

Select the Firefox menu (Three horizontal parallel lines) at the top-right of your browser window, then select Developer > Network.

4

The Developer Network Tools will open as a docked panel at the side or bottom of Firefox. Click on the Network tab (if it's not open)

5

The recording will autostart once you start performing actions in the browser.

6

Refresh the web page you are on. The goal is to reproduce the problem you've been experiencing while Firefox is recording activity.

7

Once you have reproduced the issue and you see that all of the actions have been generated in the Developer Network Panel (should just take a few seconds), right click anywhere under the "File" column and click on "Save all as Har" > Save the file somewhere convenient.

8

Save the HAR file somewhere convenient.