Examine source code of Google Maps Image Downloader

{
  "manifest_version": 2,
  "name": "Google Maps Image Downloader",
  "description": "Download photos and Street View images from any Google Maps place, business, landmark, or location.",
  "version": "1.4",
  "browser_specific_settings": {
    "gecko": {
      "id": "googlemaps-image-downloader@downloadmapimage.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "96": "icon-96.png",
    "128": "icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icon-16-gray.png",
      "32": "icon-32-gray.png",
      "48": "icon-48-gray.png",
      "96": "icon-96-gray.png",
      "128": "icon-128-gray.png"
    },
    "default_title": "Google Maps Image Downloader"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "tabs",
    "https://www.google.com/maps/*",
    "https://downloadmapimage.com/*"
  ],
  "web_accessible_resources": [
    "icon-48.png"
  ],
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "https://www.google.com/maps/*",
        "https://downloadmapimage.com/*"
      ],
      "run_at": "document_idle"
    }
  ]
}