Site Speed Checker

Lighthouse Speed and Google CrUX Report



Site Speed Checker is a free tool to check website speed by using Google CrUX and Google PageSpeed&Lighthouse.
What is Google CrUX?
It’s real-user monitoring data. The Chrome User Experience Report(CrUX) is a subset of real-user monitoring data. Chrome User Experience Report (CrUX) data is collected from real browsers around the world, based on certain browser options which determine user eligibility. A set of dimensions and metrics are collected which allow site owners to determine how users experience their sites. Read more here

What are Web Vitals?
Web Vitals are Web Performance signals designed by Google to measure the Real-World Web Performance & User Experience. And six Web Vitals are; First Contentful Paint (FCP), Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), Total Blocking Time (TBT), Speed Index (SI), and Time to Interactive (TTI)

PageSpeed Insights & Lighthouse
PageSpeed Insights (PSI) reports on the user experience of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved. Google Lighthouse is a free Google tool that helps you improve the quality of webpages on your website. The tool audits your pages for performance, accessibility, SEO, and more. And offers suggestions so you can improve these aspects.
What is SitesDB?

SitesDB is one of the largest databases of websites and domain names on the internet, with over 40 million entries and growing. For more than 12 years, we've been manually verifying and updating website and domain details, combining human expertise with AI-powered systems to ensure the accuracy and relevance of our data.

At SitesDB, we provide in-depth technical and useful information about websites and domains, including:

  • Website meta tags
  • Domain & WHOIS data
  • General backlink and ranking statistics
  • Social media engagement stats
  • Root page speed insights
  • Website content and HTML resources
  • Website safety and security details, sourced from multiple trusted security providers
  • HTTP headers analysis
  • HTML validation reports
  • Lists of similar websites and competitors
  • Website keyword analysis, including top traffic-driving keywords
  • Heading structure (H tags) breakdown
  • Domain variations across different TLDs (Top-Level Domains)

In addition to this data, SitesDB offers a suite of website analysis tools — including Chrome CRUX, Google Lighthouse, and our own AI-enhanced algorithms — to help identify alternative websites, direct competitors, and similar sites, all continuously refined through both automated systems and human review.