Examine source code of Lazy Load Killer

{
  "manifest_version": 2,
  "name": "Lazy Load Killer",
  "version": "1.0",
  "description": "Force-load all lazy-loaded images on a webpage instantly with one click.",
  "permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6f45047-79d5-44f0-b87e-74fd735aee93}"
    }
  }
}