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Make your web pages fast on all devices.
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Analyze with PageSpeed Insights. Get your PageSpeed score and use PageSpeed suggestions to make your web site faster through our online tool.
- Real-User Experience Data
- Lab Diagnostics
- Frequently Asked Questions
Real-user experience data in PSI is powered by the Chrome User Experience Report (CrUX) dataset. PSI reports real users' First Contentful Paint (FCP), Interaction to Next Paint (INP), Largest Contentful Paint (LCP), and Cumulative Layout Shift (CLS) experiences over the previous 28-day collection period. PSI also reports experiences for the experim...
PSI uses Lighthouseto analyze the given URL in a simulated environment for the Performance, Accessibility, Best Practices, and SEO categories.
What device and network conditions does Lighthouse use to simulate a page load?
Currently, Lighthouse simulates the page load conditions of a mid-tier device (Moto G4) device on a mobile networkfor mobile, and an emulated-desktop with a wired connection for desktop. PageSpeed also runs in a Google datacenter that can vary based on network conditions, you can check the location that the test was by looking at the Lighthouse Report's environment block: Note: PageSpeed will report running in one of: North America, Europe, or Asia.
Why do the field data and lab data sometimes contradict each other?
The field data is a historical report about how a particular URL has performed, and represents anonymized performance data from users in the real-world on a variety of devices and network conditions. The lab data is based on a simulated load of a page on a single device and fixed set of network conditions. As a result, the values may differ. See Why lab and field data can be different (and what to do about it)for more info.
Why is the 75th percentile chosen for all metrics?
Our goal is to make sure that pages work well for the majority of users. By focusing on 75th percentile values for our metrics, this ensures that pages provide a good user experience under the most difficult device and network conditions. See Defining the Core Web Vitals metrics thresholdsfor more info.
14 de may. de 2015 · PageSpeed Insights for Google Chrome has been deprecated. Please use the online version of PageSpeed Insights.
9 de may. de 2022 · Google PageSpeed Insights es una herramienta gratuita que ayuda a encontrar y solucionar problemas que ralentizan las aplicaciones web.
9 de ago. de 2023 · ¿Qué es PageSpeed Insights? Google PageSpeed Insights es la herramienta gratuita y de código abierto que ofrece Google para medir indicadores que te permiten analizar el rendimiento de tu sitio web en términos de velocidad.
