Field note

What it does

Astro is an open-source web framework for building fast, content-focused websites with server-first rendering and partial hydration via islands architecture.

Capabilities

Available capabilities

Public Directory Support Routing Internationalization Redirect and rewrite Image optimization Server-side rendering with data queries Content Security Policy File-based routing Static HTML Rendering View Transitions API Static Asset Handling JSX-like Expressions Middleware Dynamic Attributes Session Management Selective Hydration CSS Modules Render context API Internationalization Routing Server Islands Vite Integration Server-First Rendering Multi-Framework Support Islands Architecture Dynamic HTML Component Utilities Partial Hydration Dynamic Tags Server-side Rendering Internationalization Caching Multi-framework support Link Prefetching SSR and API endpoints Fragments Markdown Processing Static Site Generation UI-agnostic TypeScript Support Content collections Server-Side Rendering ESM Imports Session management Client Islands Zero JS by default Cookie access and modification

Astro

What it does

Available capabilities

Tags

Ways to use it

Product features

alt (required)

densities

format

<Image />

Image and Assets API Reference

Imports from astro:assets

inferSize

quality

sizes

src (required)

width and height (required for images in public/ )

widths