Examine source code of Image Optimizer Pro Plus

{
  "manifest_version": 2,
  "name": "Image Optimizer Pro Plus",
  "version": "1.0",
  "description": "Optimize images with advanced features",
  "permissions": [
    "activeTab",
    "downloads",
    "storage",
    "<all_urls>",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "applications": {
    "gecko": {
      "id": "imageoptimizerpro@example.com",
      "strict_min_version": "58.0"
    }
  },
  "default_locale": "en"
}