Astro is an open-source web framework for building fast, content-driven websites such as blogs, marketing sites, documentation and e-commerce storefronts.
Astro renders pages to HTML and sends no JavaScript to the browser by default. Interactive parts are added as 'islands' using the UI framework of your choice, which keeps pages fast and helps Core Web Vitals and SEO.
Key features
- Zero JavaScript by default, with HTML-first rendering
- Islands architecture for adding interactivity only where needed
- Use React, Vue, Svelte, Solid or Preact components together
- Content collections for type-safe Markdown and MDX
- Static generation and on-demand server rendering
- Adapters for Netlify, Vercel, Cloudflare, Node and more
- Large integration ecosystem and themes
Who it's for
Astro is for developers and teams building content-heavy sites where speed and SEO matter, including bloggers, marketers, docs teams and agencies.
Common use cases
- Building a fast blog or personal site
- Creating marketing and landing pages
- Publishing documentation sites
- Running content-driven e-commerce storefronts
Pricing
Astro is free and open source under the MIT license.
Alternatives
- Next.js: React framework for full-stack apps
- Gatsby: React-based static site generator
- Payload CMS: TypeScript headless CMS that pairs with modern frameworks
FAQ
Is Astro free?
Yes. Astro is free and open source under the MIT license.
What is Astro used for?
Astro is used to build fast, content-driven websites such as blogs, docs, marketing sites and storefronts.
Astro vs Next.js: which should I use?
Astro is best for content-heavy sites that need minimal JavaScript, while Next.js suits highly interactive full-stack React apps.
Is Astro good for SEO?
Yes. Astro outputs HTML with little or no JavaScript, which helps page speed and search performance.
Can I use React with Astro?
Yes. Astro supports React, Vue, Svelte, Solid and Preact components, even on the same page.
Where can I deploy an Astro site?
Astro can be deployed to Netlify, Vercel, Cloudflare, Node servers and any static host.