Examine source code of Page Notes

{
  "manifest_version": 2,
  "name": "Page Notes",
  "short_name": "PageNotes",
  "version": "1.0.2",
  "description": "Lưu ghi chú nhanh per-page hoặc per-domain. Nhẹ và an toàn.",
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Page Notes",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "applications": {
    "gecko": {
      "id": "{fd90a1d9-aad0-4379-9e02-3c2790c498ba}"
    }
  }
}