Starlight

Starlight is a full-featured documentation theme for Astro that creates lightning-fast documentation sites with excellent accessibility and SEO.

Key Features

• Astro Powered: Near-zero JavaScript by default
• i18n Support: Built-in internationalization with RTL support
• Site Search: Pagefind-powered search included
• Component Overrides: Customize any part of the theme
• Markdown & MDX: Write in Markdown with optional MDX components

Core Capabilities

Starlight leverages Astro's partial hydration to ship minimal JavaScript, resulting in documentation sites that score 100 on Lighthouse performance metrics. The component override system lets you customize headers, footers, and sidebars without ejecting from the theme.

For vibe coders who prioritize performance and accessibility, Starlight delivers enterprise-quality documentation infrastructure as a free, open-source solution.