Lighthouse Score.
The Lighthouse Score is a rating from Google that measures the quality of a website in four categories: Performance, Accessibility, Best Practices, and SEO. A score of 90+ is considered 'good' in each category.
Lighthouse Score — Explained in Detail
Google Lighthouse is an open-source tool that automatically evaluates the quality of web pages. It analyzes four main categories on a scale of 0–100: Performance (loading speed, Core Web Vitals), Accessibility (can all users use the site?), Best Practices (security, modern web standards), and SEO (basic search engine optimization). Lighthouse is integrated into Chrome DevTools and can also be accessed via PageSpeed Insights (pagespeed.web.dev).
The Performance score is the most important and most difficult value. It is based on six metrics: First Contentful Paint (FCP), Largest Contentful Paint (LCP), Total Blocking Time (TBT), Cumulative Layout Shift (CLS), Speed Index, and Time to Interactive (TTI). Many WordPress websites achieve only 20–50 out of 100 points — modern React/Next.js websites with optimized architecture routinely achieve 95–100.
For Swiss SMEs, the Lighthouse Score is an important quality indicator: Google uses Core Web Vitals (which are included in the Performance score) as a ranking factor. A fast website improves not only rankings but also conversion rates: According to Google, 53% of mobile users leave a page that takes longer than 3 seconds to load. DLM Digital delivers websites with guaranteed Lighthouse Scores of 90+ in all categories.
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Premium WebsitesFrequently Asked Questions About Lighthouse Score
Three options: 1) Google PageSpeed Insights (pagespeed.web.dev) — simply enter the URL. 2) Chrome DevTools: Right-click > Inspect > 'Lighthouse' tab > Start analysis. 3) Google Search Console: Core Web Vitals Report (shows field data from real users). Tip: Test both 'Mobile' and 'Desktop' — the scores often differ significantly.
Yes, but it requires an optimized architecture. With Static Site Generation (SSG), optimized images (WebP/AVIF), minimized JavaScript, edge hosting, and careful asset loading, we at DLM Digital routinely achieve 98–100 points. WordPress websites rarely reach more than 70–80 — even with caching plugins. The architecture makes the difference.
Not the overall score directly, but the Core Web Vitals contained within it (LCP, CLS, INP) have been official Google ranking factors since 2021. A good Performance score correlates strongly with good Core Web Vitals. The SEO score checks basic optimizations (meta tags, robots.txt) but is not a ranking factor in itself. Conclusion: The Performance score influences rankings indirectly but measurably.
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