Examine source code of Voz Next

{
  "manifest_version": 2,
  "name": "Voz Next",
  "version": "1.4.34",
  "browser_specific_settings": {
    "gecko": {
      "id": "voznext@nmtrung.com"
    }
  },
  "author": "nmtrung",
  "description": "__MSG_extDes__",
  "default_locale": "en",
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "180": "images/icon180.png"
  },
  "browser_action": {
    "default_icon": "images/icon32.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "notifications",
    "*://voz.vn/*",
    "*://api.imgur.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://voz.vn/*"
      ],
      "css": [
        "assets/app.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://voz.vn/*"
      ],
      "js": [
        "js/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  }
}