Examine source code of Quick Bookmark Managercs

{
  "manifest_version": 2,
  "name": "Quick Bookmark Manager",
  "version": "1.0",
  "description": "Quickly add, view, and remove bookmarks from popup.",
  "permissions": [
    "bookmarks",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Quick Bookmark Manager",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{12899388-1226-4e04-9b9d-b492d2725315}"
    }
  }
}