Page Speed Analyzer & Core Web Vitals Checker

A PageSpeed Insights score of 90-100 is considered good, 50-89 needs improvement, and below 50 is poor. However, the overall numeric score is less important than passing the individual Core Web Vitals thresholds, which are the actual ranking signals Google uses. Your LCP should load the largest visible element within 2.5 seconds, INP should keep interaction responsiveness under 200 milliseconds, and CLS should keep visual layout shifts below 0.1. Many sites score 65-75 overall while still passing all three Core Web Vitals, which is sufficient for ranking purposes. Focus your optimization efforts on the specific metrics that are failing rather than chasing a perfect 100 score. Mobile scores are typically lower than desktop due to slower networks and less powerful processors, so prioritize mobile performance since Google uses mobile-first indexing.

Page speed is a direct Google ranking factor that has been officially confirmed since 2010 for desktop and 2018 for mobile. Google's Page Experience update further elevated its importance by making Core Web Vitals (LCP, INP, CLS) explicit ranking signals. In practice, page speed affects SEO in multiple ways: faster pages receive a direct ranking boost, lower bounce rates send positive user engagement signals that indirectly improve rankings, Google can crawl more pages within your crawl budget when pages load quickly, and users are more likely to share and link to fast-loading content. Research shows that sites loading within 2 seconds receive significantly more organic traffic than slower competitors, and conversion rates drop approximately 4.42% for every additional second of load time. For competitive keywords where multiple pages have similar content quality and backlink profiles, page speed often serves as the tiebreaker.

Core Web Vitals are three specific metrics Google uses to measure real-world user experience on web pages. Largest Contentful Paint (LCP) measures loading performance by tracking when the largest visible content element (typically a hero image or heading block) finishes rendering — the threshold is 2.5 seconds or faster. Interaction to Next Paint (INP) measures responsiveness by recording how quickly the page responds to user interactions across the entire visit, with a threshold of 200 milliseconds or faster. INP replaced First Input Delay (FID) as a Core Web Vital in March 2024; FID only measured the delay on the very first interaction, which understated real responsiveness problems, so any tool or guide still reporting FID is out of date. Cumulative Layout Shift (CLS) measures visual stability by quantifying how much page content shifts unexpectedly during loading — the threshold is 0.1 or less. Google is transitioning FID to Interaction to Next Paint (INP) for even more comprehensive interactivity measurement. These metrics matter because they directly influence Google rankings as part of the Page Experience update, and they strongly correlate with user satisfaction, engagement, and conversion rates.