Astro

The web framework for content-driven websites

Free

Description

Astro is a modern JavaScript web framework specifically engineered for constructing high-performance, content-focused websites. It excels in building marketing sites, blogs, e-commerce platforms, and more, by prioritizing speed and efficient content delivery. Astro achieves this through a server-first architecture, rendering components on the server to send lightweight HTML to the browser, thereby minimizing JavaScript overhead and significantly improving load times and Core Web Vitals.

Designed to be content-driven, Astro seamlessly integrates with content from various sources, whether it's local files, external APIs, or popular Content Management Systems (CMS). It offers maximum flexibility, allowing developers to use their favorite UI frameworks like React, Vue, or Svelte alongside Astro's components. This is facilitated by its unique 'Astro Islands' architecture, which enables partial hydration for interactive elements while keeping the rest of the site static and fast. Astro is also highly customizable, supporting a wide range of integrations, themes, and CSS tools to tailor projects to specific needs.

Key Features

Server-First Rendering: Improves website performance by rendering components on the server, sending lightweight HTML with zero unnecessary JavaScript.
Content-Driven Architecture: Designed to work with content from file systems, external APIs, or favorite CMSs.
Astro Islands: Optimizes websites by enabling partial hydration for interactive UI components, keeping the rest of the site static for speed.
UI Framework Agnostic: Supports major UI frameworks like React, Vue, Svelte, Solid, and Preact, allowing developers to bring their existing components.
Zero JavaScript by Default: Ships only the JavaScript essential for interactivity, automatically stripping away the rest for faster load times.
Content Collections: Organizes Markdown and MDX content with built-in TypeScript type-safety and frontmatter validation.
View Transitions API: Enables seamless page transitions with built-in, browser-native APIs for smoother user experiences.
Extensible Integrations: Offers a rich ecosystem of integrations for UI frameworks, CSS libraries, deployment adapters, and developer tooling.