Astro
Astro is an open-source web framework optimized for building fast, content-focused websites, using an 'islands architecture' that ships minimal or zero JavaScript by default and hydrates only the components that need interactivity.
Definition
Astro is an open-source web framework optimized for building fast, content-focused websites, using an 'islands architecture' that ships minimal or zero JavaScript by default and hydrates only the components that need interactivity.
Overview
Astro lets developers author pages in .astro files or bring in components from React, Vue.js, Svelte, or Solid, rendering everything to static HTML at build time. Interactive 'islands' opt into client-side JavaScript individually, so a page with mostly static content doesn't pay the cost of hydrating an entire framework just for a single interactive widget. It's commonly paired with Tailwind CSS for styling and deployed to platforms like Vercel, and is often positioned as a lighter-weight alternative to fully client-hydrated frameworks like Next.js for content-heavy sites such as blogs, marketing pages, and documentation. First released around 2021, Astro's framework-agnostic philosophy lets teams mix components from multiple UI libraries within a single project rather than committing to one exclusively.
Key Features
- Islands architecture that ships zero JavaScript by default
- Framework-agnostic — use React, Vue, Svelte, or Solid components together
- Content collections with type-safe Markdown and MDX handling
- Built-in image optimization and static-first rendering
- View transitions support for smooth page navigations
- Server-side rendering and hybrid rendering modes