Best page speed and Core Web Vitals tools in 2026
Page experience is part of how Google evaluates pages, and slow pages lose visitors. These tools measure Core Web Vitals (LCP, INP, CLS), show what slows a page down and track performance over time.
- pagespeed.web.dev Free
PageSpeed Insights: Google's free test for Core Web Vitals and page speed
PageSpeed Insights combines real-user Core Web Vitals data from the Chrome UX Report with a Lighthouse lab test, and lists specific opportunities to make the page faster.
- gtmetrix.com Freemium
GTmetrix: Detailed page speed reports with waterfalls and monitoring
GTmetrix tests page speed and shows a detailed waterfall of every request, along with Web Vitals and recommendations. Paid plans add scheduled monitoring, more test locations and alerts.
- developer.chrome.com Free
Lighthouse: Open-source audit for performance, accessibility and SEO basics
Lighthouse runs inside Chrome DevTools or from the command line and scores a page on performance, accessibility, best practices and basic SEO. Developers can run it in CI to catch regressions.
- search.google.com Free
Google Search Console: Google's own data on how your site performs in search
Search Console shows the queries people use to find your site, your clicks, impressions and average position, plus indexing problems, Core Web Vitals and manual actions. Every website should have it set up.