About PageSpeed Insights
Helping you build faster websites
Our Mission
We believe everyone deserves a fast website. PageSpeed Insights makes it easy to understand your site's performance and take action to improve it – no technical expertise required.
What are Core Web Vitals?
Core Web Vitals are Google's standard for measuring user experience on the web. These three metrics capture the most important aspects of how people experience your website:
Loading
LCP measures how quickly the main content of your page loads. A fast LCP helps users feel like your site is responsive.
Interactivity
INP measures how quickly your site responds to user interactions. Low INP means your site feels snappy and responsive.
Visual Stability
CLS measures how much your page layout shifts while loading. Low CLS means things don't jump around unexpectedly.
How It Works
PageSpeed Insights uses Google's official PageSpeed Insights API to analyze your website. This means you get the exact same data that Google uses to evaluate sites.
Powered by Google's Official API
We use the Google PageSpeed Insights API v5 to analyze websites. This ensures accuracy and gives you insights that directly relate to how Google sees your site.
View API DocumentationWhy Performance Matters
Website speed isn't just about convenience – it directly impacts your business. Faster sites have better conversion rates, lower bounce rates, and happier users.
Google also uses page speed as a ranking factor, meaning faster sites can rank higher in search results. Good Core Web Vitals are essential for SEO.
of mobile users leave sites that take over 3 seconds to load
increase in conversions for every second faster load time
Google made Core Web Vitals a ranking factor
100% Free, No Strings Attached
PageSpeed Insights is completely free to use. We believe everyone should have access to the same performance data that big companies use. Analyze as many sites as you want!
Analyze Your Site Now