Examine source code of Clouduck Hosting

{
  "manifest_version": 2,
  "name": "Clouduck Hosting",
  "version": "1.1.0",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "activeTab"
  ],
  "action": {
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    },
    "default_title": "Clouduck Hosting",
    "default_popup": "popup/html.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{50e8be8d-a948-49b4-bfd5-e7b6ab95dd46}"
    }
  }
}