react-meta-seo ⚛️🔍

The definitive SEO library for React 19.

Status: Production-Ready for React 19+ | 📚 Full Documentation

react-meta-seo is a lightweight (< 2kB minified/gzipped), type-safe SEO library built exclusively for React 19. It leverages React's native metadata hoisting primitive, removing the need for react-side-effect or heavy context providers.

Features 🚀

• React 19 Native: Uses built-in <title>, <meta>, and <link> hoisting. Zero hydration mismatches.
• RSC Compatible: Works in Server Components.
• Preloading: Smart resource preloading via <Preload />.
• Dynamic Robots: Control indexing with <Robots index={false} />.
• CLI Power: Auto-generate sitemaps via npx react-meta-seo generate-sitemap.
• JSON-LD: Typed Schema.org components with Dev Validation.
• Social Preview: Built-in development overlay.

🎯 Website

Visit the Website & Documentation →

Deploy the example/ directory to see all features working live.

Installation

npm install react-meta-seo schema-dts

Note: schema-dts is a peer dependency that provides TypeScript types for Schema.org structured data. It's a type-only library and won't increase your runtime bundle size.

Requirements:

• React 19+ (uses native metadata hoisting)
• Node.js 18+ (for CLI features)

Performance Benchmarks

Library	Hydration Overhead	Bundle Size	Native Hoisting
react-meta-seo	0ms ⚡	< 2kB	✅
React Helmet	~15ms	~16kB	❌
React Helmet Async	~12ms	~14kB	❌

Benchmarked using React 19 RC with Chrome DevTools Performance profiling.

Usage

Read the Full Documentation for advanced usage, API reference, and migration guides.

1. Basic Metadata & Preloading

import { Title, Meta, Preload } from 'react-meta-seo';

export default function Page() {
  return (
    <>
      <Title>My Awesome Page</Title>
      <Meta name="description" content="This is the best page ever." />
      {/* Preload critical font */}
      <Preload href="/fonts/inter.woff2" as="font" type="font/woff2" crossOrigin="anonymous" />
    </>
  );
}

2. Dynamic Robots Control

import { Robots } from 'react-meta-seo';

export default function ProductPage({ product }) {
  // Automatically add noindex if out of stock
  return <Robots index={product.inStock} follow={true} />;
}

3. Structured Data (Validated)

If you miss a required field (like image for a Product), react-meta-seo will warn you in the console during development.

import { Schema, SchemaPresets } from 'react-meta-seo';

export default function ProductPage() {
  return (
    <Schema 
      data={SchemaPresets.product({
        name: "Cool Shoes",
        offers: { "@type": "Offer", "price": "99.00", "priceCurrency": "USD" }
        // ⚠️ Warns if you forget 'image'!
      })} 
    />
  );
}

4. CLI: Sitemap Generation

Generate a standard sitemap for your build.

npx react-meta-seo generate-sitemap --hostname https://myapp.com --out public/sitemap.xml

Advanced Usage with Dynamic Routes:

npx react-meta-seo generate-sitemap --hostname https://myapp.com --routes ./routes.json

5. Social Preview Debugger

Add to your root component during development to see how your page looks on Google and Twitter.

import { SocialPreview } from 'react-meta-seo';

export default function App() {
  return (
    <>
      {/* Your app */}
      {process.env.NODE_ENV === 'development' && <SocialPreview />}
    </>
  );
}

Why react-meta-seo?

Feature	React Helmet	Next.js	react-meta-seo
Core	Legacy side-effect	Native	Native React 19
Sitemap	Manual	Built-in	CLI Generator
Validation	None	None	Dev Warnings
Bundle	~16kB	N/A	< 2kB
Setup	<Provider>	Framework	Zero Config

Migration from React Helmet

- import { Helmet } from 'react-helmet';
+ import { Title, Meta } from 'react-meta-seo';

- <Helmet>
-   <title>My Page</title>
-   <meta name="description" content="..." />
- </Helmet>
+ <Title>My Page</Title>
+ <Meta name="description" content="..." />

Contributing

PRs welcome! This library is experimental and feedback is appreciated.

## FAQ

### What happens if I render multiple `<Title>` or `<Meta>` tags?

React 19's native hoisting behavior means **the last tag wins**. If you render multiple `<Title>` components, only the last one in the render tree will be used.

```tsx
// ❌ Bad: Multiple titles
<Title>First Title</Title>
<Title>Second Title</Title> // This one wins

Best Practice: Only render one of each metadata tag per page. Use conditional rendering if you need dynamic values.

Does this work with Server Components?

Yes! All components work in both Server Components ("use server") and Client Components ("use client"). The <SocialPreview> component is client-only and uses the "use client" directive automatically.

How does this compare to React Helmet?

React Helmet uses legacy react-side-effect APIs that cause hydration overhead. react-meta-seo uses React 19's native hoisting, resulting in 0ms hydration cost and full RSC compatibility.

Community

• Contributing Guide
• Code of Conduct
• License

Author

Atharva Ralegankar

• GitHub: @atharva262005
• Email: ralegankaratharva@gmail.com

License

MIT © Atharva Ralegankar