Examine source code of Brain Flex: Math Flash

{
  "manifest_version": 2,
  "name": "Brain Flex: Math Flash",
  "version": "1.0",
  "description": "A fast-paced browser extension designed to sharpen your mental math skills. Challenge yourself with quick arithmetic questions anytime you open your browser—perfect for students and professionals looking to keep their minds sharp.",
  "icons": {
    "48": "brain-icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Brain Flex: Math Flash"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{742bb879-19d3-4b68-b23b-e3c30bb56dee}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}