Examine source code of Currency Rate Visualizer

{
  "manifest_version": 2,
  "name": "Currency Rate Visualizer",
  "version": "1.0",
  "description": "Visualize currency exchange rate trends over time.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b9e80807-03b0-494f-8b54-6831cf2b3687}"
    }
  }
}