What is PageSpeed Insights?
Turkish: PageSpeed Insights
PageSpeed Insights is Google's free tool for measuring web page performance on mobile and desktop based on Core Web Vitals.
What Is PageSpeed Insights?
PageSpeed Insights is Google’s free analysis tool for evaluating a URL’s mobile and desktop performance using both field data and a Lighthouse lab test. It shows the performance score, Core Web Vitals status, and improvement opportunities together.
The tool separates two kinds of data: field data from real Chrome users and lab data collected under controlled conditions. That distinction matters; a fast lab result does not always represent the experience of users on slower devices or networks.
What It Measures
- LCP: How quickly the main content appears
- INP: How quickly the page responds to user interactions
- CLS: How much visual instability affects the user
- FCP and TTFB: Supporting signals for first render and server response
- Lighthouse audits: Suggestions for image optimization, render-blocking resources, unused JavaScript, and more
A single score is less useful than reading which metric is weak. LCP may come from a large hero image, INP from heavy JavaScript, and CLS from ads or images without fixed dimensions.
Business Use
PageSpeed Insights is useful for SEO work, landing page conversion analysis, e-commerce product pages, and website redesign diagnostics. Core Web Vitals results should be tracked because they affect search experience and user satisfaction.
Google Search Console shows URL groups across the site, while PageSpeed Insights gives a more detailed view of one page. Using both helps prioritize performance work more accurately.