Examine source code of Site Data Cleaner

{
  "manifest_version": 2,
  "name": "Site Data Cleaner",
  "version": "2.4",
  "description": "Clear a website's stored data instantly. Deletes the cookies tied to the current site, and can also flush its local and session storage, with an optional automatic reload for a clean slate.",
  "icons": {
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c3023a9-03a7-49e5-bf35-2e9df20c24f5}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "cookies",
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "Site Data Cleaner",
    "default_popup": "app/popup.html",
    "default_icon": {
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "64": "images/icon-64.png"
    }
  }
}