In the secret browser that pops up after specifying the link in the browser automation action, hover your cursor over the image whose URL you want to retrieve and click on it.

From the displayed options, select "Retrieve Image URL".

Verify that the URL appears as shown in the sample value.
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Enter an action name.
​​If you don’t edit this field, the default name will be "Get the Image URL".

Enter the name of the acquired value field (output name).

If not edited, the field name will be "Acquired Image URL".