{"id":921,"date":"2025-05-03T10:48:38","date_gmt":"2025-05-03T10:48:38","guid":{"rendered":"https:\/\/www.woodcentral.com\/-\/peter\/?p=921"},"modified":"2026-05-24T11:28:32","modified_gmt":"2026-05-24T11:28:32","slug":"lighthouse-scores","status":"publish","type":"post","link":"https:\/\/www.woodcentral.com\/-\/peter\/lighthouse-scores\/","title":{"rendered":"Lighthouse scores"},"content":{"rendered":"\n

Lighthouse<\/a> is an open-source, automated tool developed by Google to audit and improve the quality of web pages. It evaluates websites across multiple categories: Performance (speed and responsiveness), Accessibility (usability for people with disabilities), Best Practices (security and modern web standards), SEO (search engine optimization), and Progressive Web App (PWA) capabilities. It generates a score from 0 to 100 for each category, along with detailed diagnostics and recommendations for improvement. Lighthouse is integrated into Chrome DevTools, available as a browser extension, or can be run via command-line or APIs.<\/p>\n\n\n\n

Why is it important?<\/strong><\/p>\n\n\n\n

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  1. User Experience<\/strong>: High Lighthouse scores correlate with faster load times, better accessibility, and smoother interactions, directly enhancing user satisfaction and retention.<\/li>\n\n\n\n
  2. SEO and Visibility<\/strong>: Google uses page experience signals (e.g., Core Web Vitals, which Lighthouse measures) in its ranking algorithm. Better scores can improve search engine rankings.<\/li>\n\n\n\n
  3. Accessibility<\/strong>: Ensures websites are usable by a wider audience, including those with disabilities, which is both a legal and ethical priority.<\/li>\n\n\n\n
  4. Performance Optimization<\/strong>: Identifies bottlenecks like slow-loading assets or inefficient code, critical for mobile users and low-bandwidth environments.<\/li>\n\n\n\n
  5. Business Impact<\/strong>: Faster, more accessible sites reduce bounce rates and increase conversions. For example, a 2020 study showed a 0.1-second improvement in load time can boost retail conversion rates by 8%.<\/li>\n\n\n\n
  6. Developer Guidance<\/strong>: Provides actionable insights, helping developers prioritize fixes to align with modern web standards.<\/li>\n<\/ol>\n\n\n\n

    In short, Lighthouse is a critical tool for developers and businesses to benchmark and optimize websites, ensuring they meet user expectations, comply with standards, and perform competitively in search rankings.<\/p>\n\n\n\n

    Exact data on the percentage of websites with a 100% Lighthouse score across all categories (Performance, Accessibility, Best Practices, SEO) is sparse and varies by source. A 2020 analysis of 6.8 million sites from the HTTP Archive found that only 1% of websites scored 99 or higher in the Performance category, with Accessibility and SEO more likely to hit 100, though still rare. No comprehensive, up-to-date figure exists for all categories combined, as scores depend on testing conditions, site complexity, and Lighthouse version.<\/a><\/p>\n\n\n\n

    A perfect 100% score across all categories is extremely challenging and not expected, as even a 99 to 100 jump requires significant optimization effort.<\/strong> Many sites, including major retailers, score much lower, with averages around 22.1 for Performance and 60 for Accessibility in a 2018 study of 70 retail sites. Given the stringent criteria and regular algorithm updates, likely less than 1% of websites achieve a perfect 100% across all Lighthouse categories<\/strong>.<\/a><\/a><\/p>\n\n\n

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    WoodCentral Lighthouse Scores<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Lighthouse is an open-source, automated tool developed by Google to audit and improve the quality of web pages. It evaluates websites across multiple categories: Performance (speed and responsiveness), Accessibility (usability for people with disabilities), Best Practices (security and modern web standards), SEO (search engine optimization), and Progressive Web App (PWA) capabilities. It generates a score from … Read more<\/a><\/p>\n","protected":false},"author":7,"featured_media":987,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/posts\/921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/comments?post=921"}],"version-history":[{"count":0,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/posts\/921\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/media\/987"}],"wp:attachment":[{"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/media?parent=921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/categories?post=921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.woodcentral.com\/-\/peter\/wp-json\/wp\/v2\/tags?post=921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}