Examine source code of Quick translator

{
  "manifest_version": 2,
  "name": "Quick translator",
  "version": "2.2.50",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "author": "Keisukes4n",
  "icons": {
    "32": "/icons/quick-translator-icon-plain.svg",
    "128": "/icons/quick-translator-icon-plain.svg",
    "256": "/icons/quick-translator-icon-plain.svg"
  },
  "browser_action": {
    "default_icon": {
      "32": "/icons/quick-translator-icon-plain.svg",
      "128": "/icons/quick-translator-icon-plain.svg",
      "256": "/icons/quick-translator-icon-plain.svg"
    },
    "default_title": "__MSG_tooltipTitle__"
  },
  "options_ui": {
    "browser_style": true,
    "open_in_tab": true,
    "page": "/documents/options/index.html"
  },
  "background": {
    "scripts": [
      "main.js"
    ]
  },
  "permissions": [
    "menus",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "82.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{8a3254ed-19a8-4d4f-ba4c-41bf7d8a2140}"
    }
  }
}