Examine source code of RTL Text Switcher

{
  "manifest_version": 2,
  "name": "RTL Text Switcher",
  "version": "1.1",
  "description": "Toggle text direction between RTL and LTR with one click. No data is collected.",
  "browser_specific_settings": {
    "gecko": {
      "id": "rtl-switcher@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icon.svg",
    "default_title": "Toggle RTL/LTR"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}