Examine source code of Send Note to Device

{
  "manifest_version": 3,
  "version": "5.6",
  "author": "Juraj Mäsiar",
  "default_locale": "en",
  "name": "__MSG_app_name__",
  "description": "__MSG_app_desc__",
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "background": {
    "scripts": [
      "background_sntd.worker.js"
    ]
  },
  "action": {
    "default_area": "navbar",
    "default_icon": {
      "128": "128.png"
    },
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+M"
      }
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "contextMenus",
    "storage",
    "alarms",
    "scripting",
    "activeTab"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "128.png",
        "utils/svg/resize-corner.svg",
        "note/note.css",
        "note/note.html",
        "note/note.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@fastaddons.com_SendNoteToDevice",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    }
  }
}