Examine source code of Krazy Karts

{
  "manifest_version": 2,
  "name": "Krazy Karts",
  "version": "1.0",
  "description": "Drive a kart and collect coins, do sick tricks or just drive around on every site!",
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "Start Krazy Karts",
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "web_accessible_resources": [
    "kart.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "therealowenj@proton.me",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}