Examine source code of Domain Collector Pro

{
  "manifest_version": 2,
  "name": "Domain Collector Pro",
  "version": "1.21",
  "description": "Collect and manage all domains communicating with the current tab.",
  "permissions": [
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "clipboardWrite",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png",
    "512": "icons/icon-512.png"
  },
  "browser_action": {
    "default_icon": {
      "64": "icons/icon-64.png"
    },
    "default_popup": "popup.html",
    "default_title": "Domain Collector"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ce7952f1-02f4-4d2c-8620-38dde59800bd}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}