Astro — Introduction

Astro is a web framework for building fast content-focused websites. It ships less JavaScript by default and supports the Islands Architecture, letting you hydrate only the components that need interactivity.

• Content-first: Use .astro, Markdown, or MDX to author pages.
• Framework-agnostic: Use React, Vue, Svelte, Solid, and more inside .astro files (islands).
• Partial hydration: Only hydrate interactive components on the client.
• Static-first: Great defaults for static output, with optional SSR.

Use cases: Documentation sites, blogs, marketing pages, and any site where performance matters.