Examine source code of SmartProxy Switcher

{
  "manifest_version": 2,
  "name": "__MSG_ext_name__",
  "version": "1.3.0",
  "description": "__MSG_ext_desc__",
  "default_locale": "en",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "xcyebgkob@mozmail.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "proxy",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "downloads"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup.html",
    "default_title": "SmartProxy Switcher"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "icons/*.png"
  ]
}