SpeedVitals – A Free Web Performance Measurement Tool

SpeedVitals is a free web performance measurement tool that uses Lighthouse to measure Lab Data and Chrome’s User Experience API (CrUX) to measure field data. SpeedVitals is designed to help web developers understand the impact of their changes on performance, and to identify issues that affect user experience. SpeedVitals measures the following:

Web Vitals: The performance of the web application or web page you are using. 

TTFB: The time it takes for a webpage to load. 

First Contentful Paint: The time it takes for a webpage to load the first contentful paint. 

Largest Contentful Paint: The largest contentful paint of the webpage. 

Cumulative Layout Shift: The cumulative layout shift of the webpage. 

First Contentful Paint: The first contentful paint of the webpage. 

Time to Interactive: The time it takes for a webpage to load and start displaying content. 

Speed Index: A performance indicator that shows how fast a web application or web page is loading. 

User Experience: The user experience of the webpage, including how well it is performing, and how easy it is to use. 

Chrome’s User Experience API (CrUX) helps you understand the impact of your changes on user experience. 

This app is free to use, and it is available to download from the Chrome Web Store.