Examine source code of Share URL QRCode

{
  "manifest_version": 3,
  "name": "Share URL QRCode",
  "version": "1.2",
  "description": "Generate a scannable QR code for the current tab's URL with one click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "share_qrcode@elyssonmr.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "clipboardWrite"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Generate QR code for this page",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Q",
        "mac": "Command+Shift+Q"
      },
      "description": "Open QR code popup"
    }
  }
}