Examine source code of WeatherPeek

{
  "manifest_version": 2,
  "name": "WeatherPeek",
  "version": "1.0",
  "description": "Check current weather with a vibrant, animated popup. Get instant updates by location or city, with dynamic weather icons and search history, all in a sleek, modern interface.",
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "activeTab",
    "geolocation",
    "https://api.openweathermap.org/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{cc027360-ebee-401c-ab7b-a1a802f4aff8}"
    }
  }
}