Examine source code of VPN99 - fast secure VPN

{
  "manifest_version": 3,
  "name": "VPN99 — fast secure VPN",
  "version": "4.3.0",
  "description": "VPN99 is the fastest, easiest, and most secure VPN service which protects your online activities and data around the clock.",
  "icons": {
    "16": "images/icons/icon16.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "128": "images/icons/icon128.png"
    },
    "default_popup": "pages/popup.html",
    "default_title": "VPN99"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "support@vpn99.net",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "tabs",
    "proxy",
    "storage",
    "privacy",
    "webRequest",
    "webRequestBlocking",
    "notifications",
    "alarms",
    "cookies",
    "scripting",
    "webNavigation"
  ],
  "optional_permissions": [
    "tabs",
    "proxy",
    "privacy",
    "webRequest",
    "webRequestBlocking",
    "notifications",
    "cookies",
    "scripting",
    "webNavigation"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "js/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "page": "pages/background.html"
  }
}