Examine source code of Periodic Element Quest

{
  "manifest_version": 2,
  "name": "Periodic Element Quest",
  "version": "1.0",
  "description": "Test your knowledge of chemistry and the periodic table! Decode hints about atomic numbers, symbols, and element properties in English. Ideal for students, science enthusiasts, and lifelong learners.",
  "icons": {
    "48": "element_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Periodic Element Quest"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2b27e35-992f-4b99-b964-8811144a74f5}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}