Examine source code of SEO Robot TXT

{
  "browser_specific_settings": {
    "gecko": {
      "id": "cloud9tintstudioandautospa@cloud9tintstudioandautospa.com"
    }
  },
  "name": "__MSG_appName__",
  "version": "1.0.0",
  "manifest_version": 3,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/16.png",
    "128": "images/128.png"
  },
  "default_locale": "vi",
  "permissions": [
    "tabs",
    "webRequest",
    "offscreen"
  ],
  "host_permissions": [
    "https://www.google.com/",
    "https://www.askapache.com/",
    "https://nnsoftware.net/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "offscreen.js",
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.jpeg",
        "images/*.png",
        "noti.mp3"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "externally_connectable": {
    "matches": [
      "<all_urls>"
    ]
  }
}