Examine source code of Internet Download Tool

{
  "manifest_version": 3,
  "name": "Internet Download Tool",
  "version": "2.2.2",
  "description": "Detects supported media on web pages and sends it to the Internet Download Tool desktop application.",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "webRequest",
    "cookies",
    "windows",
    "alarms"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "match_origin_as_fallback": true,
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup.html",
    "default_title": "Internet Download Tool"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'",
    "sandbox": "sandbox allow-scripts allow-forms allow-popups allow-modals; script-src 'self' 'unsafe-inline' 'unsafe-eval'; child-src 'self'"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}