Examine source code of Bookie-bookmark

{
  "manifest_version": 2,
  "name": "Bookie - Readlist Saver",
  "version": "1.0.0",
  "description": "Quickly save the current page to your Readlist instance.",
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Add to Readlist",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{a334c49a-323a-4eb6-a3b4-e356649451fb}"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  }
}