Astro helps you create lightning-fast websites without complicated code.
Discover the simple ideas that make Astro perfect for building fast websites.
Astro is smart about what code it sends to your visitors. It only loads interactive parts when needed, making your website much faster.
---
import MyReactComponent from './MyReactComponent.jsx';
---
<!-- Static by default -->
<MyReactComponent />
<!-- Interactive island -->
<MyReactComponent client:visible />Your website loads super fast because Astro doesn't include unnecessary code. It's like having a race car instead of a heavy truck.
<!-- Renders to static HTML only -->
<div>
<h1>Fast by Default</h1>
<p>No JavaScript shipped to browser</p>
</div>Create website pieces that you can reuse everywhere. Like LEGO blocks, you build once and use many times to save work.
---
import Header from './Header.astro';
const { title } = Astro.props;
---
<Header />
<h1>{title}</h1>
<slot />Your website is built before visitors see it, making it load instantly. Like having a finished house instead of building it while someone watches.
---
// Runs on server during build
const posts = await fetch('api/posts')
.then(r => r.json());
---
<ul>
{posts.map(post =>
<li>{post.title}</li>
)}
</ul>Use React, Vue, Svelte, or any other tools you like in the same website. It's like having a toolbox where every tool works perfectly together.
---
import ReactComponent from './React.jsx';
import VueComponent from './Vue.vue';
import SvelteComponent from './Svelte.svelte';
---
<ReactComponent client:load />
<VueComponent client:visible />
<SvelteComponent client:idle />Organize your blog posts, articles, and pages like files in folders. Astro helps you keep everything tidy and finds mistakes before they happen.
---
import { getCollection } from 'astro:content';
const blogPosts = await getCollection('blog');
---
{blogPosts.map(post =>
<article>
<h2>{post.data.title}</h2>
</article>
)}Astro makes your website lightning fast without you doing any extra work. It automatically optimizes images, shrinks code, and loads only what's needed.
---
import { Image } from 'astro:assets';
import heroImage from '../assets/hero.jpg';
---
<!-- Auto-optimized image -->
<Image
src={heroImage}
alt="Hero"
width={800}
height={400}
/>See your changes instantly in the browser as you type. No waiting, no refreshing - just smooth, fast development that keeps you in the flow.
// astro.config.mjs
import { defineConfig } from 'astro/config';
import react from '@astrojs/react';
import tailwind from '@astrojs/tailwind';
export default defineConfig({
integrations: [react(), tailwind()]
});Put your website anywhere - free hosting services, big cloud companies, or your own server. Astro works everywhere so you're never locked in.
// Deploy static site
npm run build
// Or enable SSR
import vercel from '@astrojs/vercel/serverless';
export default defineConfig({
output: 'server',
adapter: vercel()
});This educational website itself showcases Astro's key features in action. Here's how we've implemented various Astro concepts:
This site is built with modular Astro components that demonstrate reusability and clean separation of concerns.
// Component Structure
src/
├── layouts/
│ └── BaseLayout.astro
├── components/
│ ├── Navigation.astro
│ ├── Hero.astro
│ ├── ConceptCard.astro
│ └── ConceptsSection.astro
└── pages/
└── index.astroThe website renders to static HTML with minimal JavaScript only for dark mode functionality, achieving exceptional performance scores.
We've integrated Tailwind CSS using Astro's built-in integration system for utility-first styling.
// astro.config.mjs
import defineConfig from 'astro/config';
import tailwind from '@astrojs/tailwind';
export default defineConfig(
integrations: [tailwind()]
);Real performance metrics from this Astro website compared to typical React SPAs:
The development and build process showcases Astro's developer experience:
# Development server
npm run dev
# ⚡ Instant HMR updates
# Production build
npm run build
# 📦 Generates static HTML
# Build output
dist/
├── index.html # Static HTML
├── _astro/ # Optimized assets
└── favicon.svg # Static assetsThis site can be deployed to any static hosting platform or enhanced with SSR:
Start building your own fast, content-focused website with Astro today. Experience the performance and developer experience difference.