The Performance panel lets you record CPU performance profiles of your web applications. Analyze profiles to find potential performance bottlenecks and ways you can optimize resource use.
Use the Performance panel to do the following:
Web Vitals is an initiative by Google to provide unified guidance for quality signals that are essential to delivering a great user experience on the web.
The Web Vitals initiative aims to simplify the landscape, and help sites focus on the metrics that matter most, the Core Web Vitals.
Core Web Vitals are the subset of Web Vitals that apply to all web pages, should be measured by all site owners, and will be surfaced across all devtools. Each of the Core Web Vitals represents a distinct facet of the user experience, is measurable in the field, and reflects the real-world experience of a critical user-centric outcome.
To ensure you're hitting the recommended target for these metrics for most of your users, a good threshold to measure is the 75th percentile of page loads, segmented across mobile and desktop devices.