The web framework for content-driven websites
JavaScript web framework optimized for content-driven websites.
The default output is static HTML with zero JavaScript unless you explicitly add interactive components — pages are fast by default
Islands architecture lets you use React, Vue, or Svelte components side by side in the same project without committing to one framework
Content Collections with TypeScript validation for Markdown files is the cleanest content management DX for developer blogs and docs
Build output is genuinely tiny — a blog or marketing site built in Astro will score higher on Core Web Vitals than any SPA alternative
The zero-JS default approach means great SEO out of the box without any configuration or SSR tricks
Interactive app-like features (auth flows, user dashboards) are awkward to build because the framework is optimized for content sites
Component hydration has edge cases where partial hydration doesn't behave as expected and debugging the island boundaries is confusing
Smaller community than Next.js means fewer third-party plugins and less community support on specific integration problems
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