Examine source code of Drum Pad

{
  "background": {
    "page": "pages/background.html"
  },
  "browser_action": {
    "default_icon": "images/128.png",
    "default_popup": "pages/popup.html",
    "default_title": "__MSG_app_name__"
  },
  "default_locale": "en",
  "description": "__MSG_app_description__",
  "homepage_url": "https://www.codehemu.com/2022/08/drum-pad-web-extension-download-your.html",
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "64": "images/64.png",
    "128": "images/128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_app_name__",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "short_name": "drum-pad",
  "version": "1.1.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{5ac3d2a1-6b17-4f8f-ac92-bac2b8a1c44a}"
    }
  }
}