Next.js vs Astro：哪一個在 2026 年更好？
全棧 React 強大框架遇上零 JS 內容優先框架
Choose Next.js if you need a full-stack React application with dynamic features, authentication, and real-time interactivity. Choose Astro if your site is content-driven and you want zero JavaScript by default with near-perfect Lighthouse scores.
Next.js
The React framework for production
Astro
The web framework for content-driven websites
Feature Comparison
| Feature | Next.js | Astro |
|---|---|---|
| ISR | ✓ | ✗ |
| SSG | ✓ | ✓ |
| SSR | ✓ | ✓ |
| Streaming | ✓ | ✓ |
| Turbopack | ✓ | ✗ |
| API routes | ✓ | ✓ |
| Middleware | ✓ | ✓ |
| TypeScript | ✓ | ✓ |
| Built-in CSS | ✓ | ✓ |
| Edge runtime | ✓ | ✓ |
| Font optimization | ✓ | ✗ |
| Server Components | ✓ | ✗ |
| File-based routing | ✓ | ✓ |
| Image optimization | ✓ | ✓ |
| Internationalization | ✓ | ✓ |
What is Next.js?
Next.js is the leading React framework for production, created by Vercel. It supports SSR, SSG, ISR, API routes, Server Components, and edge runtime. Used by companies like Netflix, TikTok, and Twitch, it powers some of the largest web applications globally.
What is Astro?
Astro is a content-first web framework that ships zero JavaScript by default. Using its islands architecture, only interactive components are hydrated on the client. It supports React, Vue, Svelte, and Solid components in the same project, making it uniquely flexible for content-driven websites.
Key Differences
JavaScript Output
Astro ships zero JavaScript by default and only hydrates interactive islands. Next.js ships ~85KB of baseline JavaScript for React hydration. For content sites, this difference is dramatic.
Architecture Philosophy
Next.js is app-first — everything is a React component. Astro is content-first — HTML is the default, and JavaScript is opt-in per component via islands architecture.
Framework Lock-in
Next.js requires React. Astro lets you use React, Vue, Svelte, Solid, or plain HTML in the same project, reducing framework lock-in.
Full-Stack Capabilities
Next.js has mature full-stack features: Server Actions, middleware, API routes, authentication patterns. Astro has API endpoints and SSR but is less mature for complex app logic.
Build Performance
Astro uses Vite and builds extremely fast. Next.js uses Turbopack (dev) and Webpack (prod), which can be slower on large sites.
Performance Comparison
| Metric | Next.js | Astro |
|---|---|---|
| TTFB | Fast with edge | Extremely fast |
| Build tool | Turbopack / Webpack | Vite |
| Base JS bundle | ~85KB | ~0KB (zero JS default) |
| Lighthouse range | 90-100 | 95-100 |
SEO Comparison
| SEO Feature | Next.js | Astro |
|---|---|---|
| OG tags | ✓ | ✓ |
| robots.txt | ✓ | ✓ |
| SSG support | ✓ | ✓ |
| SSR support | ✓ | ✓ |
| Structured data | ✓ | ✓ |
| Meta tag control | ✓ | ✓ |
| Dynamic OG images | ✓ | ✗ |
| Sitemap generation | ✓ | ✓ |
Next.js
- Massive ecosystem and community
- Vercel-native deployment with zero config
- Server Components reduce client JavaScript
- Full-stack with API routes and Server Actions
- ~85KB baseline JavaScript even for simple pages
- Vendor lock-in concerns with Vercel features
- Complex mental model (App Router vs Pages Router)
- Slower builds on large sites compared to Vite-based tools
Astro
- Zero JavaScript shipped by default
- Use any UI framework (React, Vue, Svelte, Solid)
- Near-perfect Lighthouse scores out of the box
- Islands architecture hydrates only interactive components
- Not ideal for highly interactive applications
- Smaller ecosystem than Next.js or Nuxt
- No built-in ISR or Server Components model
- Less mature for full-stack app development
When to Choose Next.js
- You need a full-stack React application
- Dynamic content with authentication and real-time features
- Your team already knows React well
- You want Vercel-native deployment
When to Choose Astro
- Your site is primarily content (blog, docs, marketing)
- Performance and Core Web Vitals are top priority
- You want to mix UI frameworks in one project
- You want the simplest possible output
Can You Migrate?
Yes. We've migrated 5,000+ sites between platforms. We handle data migration, content modeling, frontend rebuilds, and SEO preservation. Every migration is zero-downtime.
Frequently Asked Questions
Next.js 和 Astro 之間有什麼區別？
Next.js 是一個全棧 React 框架，具有 SSR、SSG 和 API 路由，針對動態 Web 應用程式進行了優化。Astro 是一個內容優先的框架，默認情況下不運行任何 JavaScript，使用島嶼架構僅對互動式組件進行水合。Next.js 更適合應用程式；Astro 更適合內容網站。
Astro 比 Next.js 快嗎？
對於內容豐富的網站，是的。Astro 默認運行 ~0KB 的 JavaScript，實現近乎完美的 Lighthouse 分數。Next.js 為水合運行 ~85KB 的基線 JavaScript。對於靜態內容，Astro 的速度明顯更快。
我可以在 Astro 中使用 React 嗎？
是的。Astro 通過其島嶼架構支持 React、Vue、Svelte、Solid 和其他 UI 框架。您可以在 Astro 中使用 React 組件，只對需要互動性的組件進行水合。
Next.js 或 Astro 哪個對 SEO 更好？
兩者都對 SSR 和 SSG 支持出色的 SEO。Astro 以更小的包和更快的頁面加載速度領先，這直接影響 Core Web Vitals。Next.js 為大規模動態 SEO 提供更多靈活性。
我應該從 Next.js 遷移到 Astro 嗎？
如果您的網站主要是內容（博客、文檔、市場營銷頁面），Astro 將提供更好的性能。如果您需要複雜的客戶端互動性、身份驗證或實時功能，請保持使用 Next.js。Social Animal 可以評估您的遷移。
哪一個社區更大？
Next.js 擁有更大的社區，GitHub 星數超過 120K+，並獲得深度 Vercel 生態系統支持。Astro 擁有快速增長的社區，GitHub 星數超過 45K+，並擁有強大的內容關注工具。
Let's build
something together.
Whether it's a migration, a new build, or an SEO challenge — the Social Animal team would love to hear from you.