Python snippet to grab the unique domains that are requested in a HAR file. You can generally export a HAR file from the developer tools in your browser.
The HAR file itself is just a (very large) JSON document.
import json har_json = json.load(open("harfile.har")) print("\n".join( set([ e["request"]["url"].split("//")[1].split("/")[0] for e in har_json["log"]["entries"] ])))