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Astro Performance Optimization

Your Astro website isn’t as fast as promised? We systematically analyze performance bottlenecks in your Astro architecture and optimize rendering, asset delivery, and client-side JavaScript.

With a focus on Core Web Vitals, Lighthouse, and real user data, we bring load times, interactivity, and stability to a measurably better level – for scores of 90+ and sustainable SEO performance through Astro performance optimization.

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Astro Performance

Why Performance Is Critical

Website speed isn’t a nice-to-have – it’s a critical success factor.

The hard facts:

  • 53% of visitors leave a page that takes longer than 3 seconds to load
  • Every second of delay costs up to 7% in conversions
  • Google uses Core Web Vitals as a ranking signal

We analyze your Astro website holistically and implement targeted Astro performance optimization for measurable results.

Test Your Own Website

Our Astro Performance Optimization Areas

Image Optimization

Images are often the biggest performance killer. We implement modern image formats (WebP, AVIF), automatic resizing, lazy loading, and blur-up placeholders for optimal load times.

Typical improvement: 40-60% smaller image sizes at the same quality.

JavaScript Reduction

Astro ships minimal JavaScript by default – but unnecessary scripts can still creep in. We perform bundle analysis, eliminate bloat, and optimize third-party scripts.

Typical improvement: 30-50% less JavaScript.

Server & Caching

The best optimization is useless with slow hosting. We analyze TTFB, configure edge deployment, optimize CDN settings, and implement effective caching strategies.

Typical improvement: 50-70% faster Time to First Byte.

Rendering Strategy

Astro offers SSG, SSR, and Hybrid Rendering. We select the optimal strategy for each page type and implement Server Islands for dynamic content without performance penalties.

Typical improvement: Optimal balance between speed and dynamism.

Font Optimization

Web fonts can significantly impact load times. We optimize font loading with subsetting, font-display strategies, and self-hosting – for lightning-fast text rendering without layout shifts.

Typical improvement: 80% smaller font files, no FOUT/FOIT.

Critical CSS & Preloading

We extract critical CSS for the above-the-fold area and implement resource hints (preload, prefetch, preconnect) for optimal resource prioritization.

Typical improvement: 20-40% faster First Contentful Paint.

Performance Guarantee

We stand behind our work: after our Astro performance optimization, your website will achieve Core Web Vitals of at least 90 in the Google PageSpeed Test.

If we don’t reach this goal, we’ll work with you to determine the next meaningful steps to achieve your objectives. That’s our promise.

Why can we guarantee this?

  • Deep Astro expertise
  • Proven optimization methods
  • Direct contact with the Astro core team

Typical Results

Before → After:

  • LCP: 4.2s → 1.1s
  • FID: 180ms → 12ms
  • CLS: 0.25 → 0.02
  • Performance Score: 45 → 95
  • Accessibility Score: 67 → 97
  • Best Practice Score: 84 → 91
  • SEO Score: 76 → 98

*Average values from completed projects

Frequently Asked Questions About Astro Performance Optimization

Find answers to the most important questions about website performance optimization here.

How do I measure my current performance?

The easiest way is with the free Google PageSpeed Insights tool (pagespeed.web.dev). There you can see your Core Web Vitals and get initial optimization recommendations.

Why is my Astro website slow?

Common causes: unoptimized images, too many third-party scripts, incorrect rendering (SSR instead of static), slow hosting, or unoptimized fonts. Our Astro consulting service can identify the root causes.

Do I need ongoing support after the optimization?

Recommended! With our Support & Maintenance service, we continuously monitor your performance and proactively respond to any degradation.

Do you also optimize non-Astro websites?

Our focus is on Astro. If your website runs on a different platform, we recommend a migration to Astro – that often delivers the biggest performance gains.

Can you also add new features?

Yes, minor adjustments can be made as part of the Astro performance optimization. For larger extensions, we recommend our custom Astro website development.

Request an Astro Performance Optimization Audit

Our Performance Team

Seibert Group GmbH

Luisenstraße 37-39, 65185 Wiesbaden
+49 611 20570 0 astro-help@seibert.group