Examine source code of Domain Defender (TM)

{
  "manifest_version": 2,
  "name": "Domain Defender (TM)",
  "short_name": "AI6 Website Security Tester",
  "description": "Made by ai6net to check blacklisted sites \n https://ai6.net",
  "version": "1.0.0.4",
  "icons": {
    "19": "img/19x19.png",
    "48": "img/48x48.png",
    "100": "img/100x100.png",
    "128": "img/128x128.png"
  },
  "web_accessible_resources": [
    "file-sounds-1082-closure.wav"
  ],
  "permissions": [
    "tabs",
    "<all_urls>",
    "alarms",
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "img/19x19.png",
    "default_popup": "popup.html"
  }
}