Examine source code of Sz Games Portable

{
  "manifest_version": 3,
  "name": "Sz Games Portable",
  "description": "A Way To Inject Sz Games Into Any Site",
  "version": "0.0.10",
  "browser_specific_settings": {
    "gecko": {
      "id": "sz-gamesportable@ex.com"
    }
  },
  "icons": {
    "16": "logo/logo-16.png",
    "48": "logo/logo-48.png",
    "128": "logo/logo-128.png"
  },
  "action": {
    "default_title": "Sz Games",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "*://*/*"
  ]
}