Astro 5.1

The web framework for content-driven websites

Astro powers the world's fastest marketing sites, blogs, e-commerce websites, and more.

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npm create astro@latest

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Used by some of the largest companies around the world:

What is Astro?

Astro is a JavaScript web framework optimized for building fast, content-driven websites.

Server-First

Astro improves website performance by rendering components on the server, sending lightweight HTML to the browser with zero unnecessary JavaScript overhead.

Content-Driven

Astro was designed to work with your content, no matter where it lives. Load data from your file system, external API, or your favorite CMS.

Customizable

Extend Astro with your favorite tools. Bring your own JavaScript UI components, CSS libraries, themes, integrations, and more.

Best-In-Class Performance

Astro Islands

Islands optimize your website like no other web framework can. Leverage Astro's unique page load performance to improve conversion rates, Core Web Vitals, and SEO.

Real-World Core Web Vitals

Astro Core Web Vitals Passing

65%

Gatsby Core Web Vitals Passing

44%

WordPress Core Web Vitals Passing

43%

Next.js Core Web Vitals Passing

28%

Nuxt Core Web Vitals Passing

26%

View the full dataset · Based on real-world performance data from HTTP Archive and the Chrome UX Report.

Maximum Flexibility

Zero Lock-in

Astro supports every major UI framework. Bring your existing components and take advantage of Astro's optimized client build performance.

<ProductPageLayout>
<img src={product.imageUrl} alt={product.imageAlt} />
<h2>{product.name}</h2>
<BuyButton id={product.id} client:load />
</ProductPageLayout>
Official Astro Cap Swag

Snapback Cap

$15.50

Everything you need

Fully Featured

Astro comes with everything you need to build a modern website. Need more? Extend Astro with integrations.

Content Collections

Organize your Markdown and MDX with built-in TypeScript type-safety and frontmatter validation.

0

Zero JavaScript, By Default

Astro only ships the JavaScript you need and automatically strips away the rest for a faster website.

View Transitions

Seamlessly morph, fade, and swipe across pages with built-in, browser-native View Transition APIs.

Middleware

Actions

Environment Variables

Deployment Adapters

UI Integrations

Dev Toolbar

Ecosystem

Themes

Get started faster with a pre-built website theme for Astro. Customize it to make it your own.

Start building with
Astro today

Get Started
npm create astro@latest

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Astro is free, open-source software made possible by these wonderful sponsors