Examine source code of MindFlex: Daily Riddles

{
  "manifest_version": 2,
  "name": "MindFlex: Daily Riddles",
  "version": "1.0",
  "description": "Sharpen your mind and challenge your lateral thinking with a collection of fun, brain-teasing riddles right in your browser.",
  "icons": {
    "48": "mindflex_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "MindFlex Riddles"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bbb23e2a-f30c-4e8d-9def-cb36707ff65f}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}