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Dev.to
Dev.to
6/19/2026
How I get marketing sites to 100/100 on mobile Lighthouse (the exact Astro setup)

How I get marketing sites to 100/100 on mobile Lighthouse (the exact Astro setup)

Short summary

Achieve perfect mobile Lighthouse scores on marketing sites by shipping minimal JavaScript—use static HTML with inline CSS, defer third-party analytics until user interaction, and optimize fonts and images. The approach trades bounce-rate analytics for measurably faster load times; requires framework discipline (Astro without islands or Next.js with strict static generation). Real-world sites like zivaro.co.za demonstrate 100/100 mobile performance is achievable without exotic tools.

  • Eliminate unnecessary JavaScript and framework hydration to reduce main-thread blocking and Total Blocking Time
  • Inline critical CSS, defer analytics with event listeners, preload fonts with font-display: optional
  • Applicable to Astro (no-island architecture) or Next.js (static generation + server components discipline)

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