perf-astro

Improve Astro Lighthouse performance by inlining critical CSS to speed up First Contentful Paint, compressing HTML and JS assets during build, and applying non-blocking font loading patterns to optimize Largest Contentful Paint.

Inline critical CSS in an Astro project by installing the astro-critters integration and updating astro.config.mjs, which automatically extracts and injects essential styles directly into your HTML markup during the build process.

Compress Astro build assets by integrating @playform/compress into your astro.config.mjs file, which automatically optimizes and minifies your HTML, CSS, and JavaScript outputs across all site routes.

This setup optimizes Astro sites with many pages by applying consistent asset compression, font preloads, and critical CSS inlining across all routes during the build workflow to ensure uniform Lighthouse score improvements.

Low Astro Lighthouse scores often stem from render-blocking CSS and unoptimized font loading, which you can resolve by applying automated critical CSS inlining and non-blocking font preloads during your build.

You need astro-critters for automated critical CSS inlining and @playform/compress for asset compression to achieve the recommended Astro build configuration that targets 95+ Lighthouse performance thresholds.