astro5-blog-best-practices

Astro 5 provides built-in image optimization that automatically converts, resizes, and serves responsive images at build time. Use the `Image` component from `astro:assets` to declare images with width and height, enabling lazy loading and WebP generation without manual configuration.

Islands Architecture isolates interactive components as separate JavaScript islands within static HTML. For blogs, this means most content renders as static markup while only necessary interactive features load JavaScript, dramatically reducing bundle size and improving Core Web Vitals.

Define content collections using Zod schemas in `src/content/config.ts`, specify your blog post collection with fields like title and date, then use `getCollection()` to fetch and query posts with full TypeScript support at build time.

Yes. Astro 5 supports RSS feed generation via the `@astrojs/rss` integration and sitemap generation via `@astrojs/sitemap`. Both integrate with your Content Layer collections to automatically include all blog posts without manual updates.

Combine structured data using JSON-LD schemas, auto-generated RSS and sitemap feeds, semantic HTML from static rendering, and open graph meta tags. Astro 5's build-time rendering ensures search engines crawl complete, optimized HTML without JavaScript dependency.

Use client directives like `client:load`, `client:idle`, or `client:visible` only for genuinely interactive elements—search, comments, or filters. Static content should never use directives; islands should load only when necessary to maintain the performance benefits of static rendering.