Examine source code of WordReference Translate

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "3.0.1",
  "icons": {
    "16": "/icons/icon/icon-16.png",
    "32": "/icons/icon/icon-32.png",
    "48": "/icons/icon/icon-48.png",
    "96": "/icons/icon/icon-96.png",
    "128": "/icons/icon/icon-128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "contextMenus",
    "scripting",
    "cookies"
  ],
  "host_permissions": [
    "https://www.wordreference.com/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "/icons/*",
        "/content-scripts/*.css",
        "/in-page-popup.html",
        "/assets/*",
        "/chunks/*"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "author": "diridevelops@gmail.com",
  "optional_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@wrtranslate.com",
      "strict_min_version": "115.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "WordReference Popup",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "content_scripts": []
}