Examine source code of Unit Converter

{
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  "default_locale": "cs",
  "name": "__MSG_extName__",
  "version": "1.0.1",
  "description": "__MSG_extDescription__",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://api.frankfurter.dev/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "_locales/*/messages.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_title": "__MSG_actionTitle__",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cfed6377-f772-46ae-988b-067dc72c8580}",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  }
}