Examine source code of MP3 Cutter

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "description": "__MSG_shortDesc__",
  "action": {},
  "version": "1.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{a8d34e5f-6b1a-4c2b-9e4d-7f8a1b2c3d4e}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "64": "assets/icons/icon64.png",
    "128": "assets/icons/icon128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "unlimitedStorage",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}