---
title: Defer Non-Critical Third-Party Libraries
impact: MEDIUM
impactDescription: loads after hydration
tags: bundle, third-party, analytics, defer
---
## Defer Non-Critical Third-Party Libraries
Analytics, logging, and error tracking don't block user interaction. Load them after hydration.
**Incorrect (blocks initial bundle):**
```tsx
import { Analytics } from '@vercel/analytics/react';
export default function RootLayout({ children }) {
return (
{children}
);
}
```
**Correct (loads after hydration):**
```tsx
import dynamic from 'next/dynamic';
const Analytics = dynamic(() => import('@vercel/analytics/react').then((m) => m.Analytics), {
ssr: false
});
export default function RootLayout({ children }) {
return (
{children}
);
}
```