SEO for Astro

Islands architecture and content-first performance.

Overview

Astro ships zero JS by default and renders pages to static HTML, making it excellent for content SEO and Core Web Vitals. Its islands architecture lets you add interactivity only where needed.

Common SEO issues

  • Forgetting to set per-page title and description via Astro frontmatter
  • Not generating a sitemap via @astrojs/sitemap
  • Large interactive islands delaying LCP

Implementation checklist

  • Use the <head> component or astro-seo for per-page meta
  • Add @astrojs/sitemap and submit to Search Console
  • Add JSON-LD via a layout component
  • Keep islands small and lazy-loaded
  • Use Astro's built-in image optimisation with width/height

Schema tip

Render structured data in a layout slot so every page inherits Organization schema and can add page-specific schema.

Internal linking tip

Generate related-posts links from frontmatter tags so content clusters link together automatically.

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