Performance Test Report

Web Vitals is a Google initiative to provide unified guidance for web page quality signals that are essential to delivering a great user experience on the web. It aims to simplify the wide variety of available performance-measuring tools, and help site owners focus on the metrics that matter most, the Core Web Vitals.

Core Web Vitals

Largest Contentful Paint · Perceived Load Speed
LCP reports the render time of the largest image or text block visible in the viewport, relative to when the user first navigated to the page.

First Input Delay · Interactivity
FID measures the time from when a user first interacts with a page (that is, when they click a link, tap on a button, or use a custom, JavaScript-powered control) to the time when the browser is actually able to begin processing event handlers in response to that interaction.

Cumulative Layout Shift · Visual Stability
CLS is a measure of the largest burst of layout shift scores for every unexpected layout shift that occurs during the lifespan of a page.

Other Web Vitals

First Contentful Paint · Perceived Load Speed
The FCP metric measures the time from when the user first navigated to the page to when any part of the page's content is rendered on the screen.

Interaction to Next Paint · Interactivity
INP is a metric that assesses a page's overall responsiveness to user interactions by observing the latency of all click, tap, and keyboard interactions that occur throughout the lifespan of a user's visit to a page. The final INP value is the longest interaction observed, ignoring outliers.

Time to First Byte · Server Responsiveness
TTFB is a metric that measures the time between the request for a resource and when the first byte of a response begins to arrive.

Scores

The displayed score value for a Web Vital is the 75th percentile (estimated) of all measurements in a given action. In addition, the scores are rated using Web Vital-specific thresholds and colorized accordingly (good, needs improvement, poor).