Examine source code of Quick Notes

{
  "manifest_version": 2,
  "name": "Quick Notes",
  "version": "1.0",
  "description": "A simple and private note-taking tool for Firefox. Write quick notes and keep them saved locally in your browser.",
  "icons": {
    "48": "icon.jpg"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Quick Notes"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f4d9c2e-6b31-4a85-9f72-3c18e5a6b904}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}