Examine source code of Themify.io convert website in wordpress theme

{
  "manifest_version" : 3 ,
  "name" : "Themify",
  "version" : "1.44.5",
  "description" : "Convert webpages into installable WordPress themes (.zip) with faithful animations. Runs 100% locally. Use only with permission.",
  "permissions" : [
    "activeTab" ,
    "scripting" ,
    "downloads" ,
    "tabs" ,
    "windows" ,
    "storage" 
  ],
  "host_permissions" : [
    "<all_urls>" 
  ],
  "background" : {
    "service_worker" : "background.js" ,
    "scripts" : [
      "lib/jszip.min.js" ,
      "license.js" ,
      "background.js" 
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "themify@REPLACE-WITH-YOUR-DOMAIN-OR-EMAIL",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ]
      }
    }
  },
  "action" : {
    "default_popup" : "popup.html",
    "default_icon" : {
      "16" : "icons/icon.png",
      "48" : "icons/icon.png",
      "128" : "icons/icon.png"
    }
  },
  "icons" : {
    "16" : "icons/icon.png",
    "48" : "icons/icon.png",
    "128" : "icons/icon.png"
  }
}