Examine source code of Speed Test Pro

{
  "manifest_version": 2,
  "name": "Speed Test Pro",
  "version": "1.0",
  "description": "Measure internet speed (ping, download, upload) and export results with timestamps. All tests run client-side using Cloudflare's public endpoints. No data collection or external tracking.",
  "browser_specific_settings": {
    "gecko": {
      "id": "speedtest_pro@user.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "browser_action": {
    "default_title": "Speed Test Pro",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "https://speed.cloudflare.com/*",
    "https://cdn.jsdelivr.net/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}