Speed & Core Vitals Test
Uses Google PageSpeed Insights to measure mobile and desktop performance and Core Web Vitals, with fixes ordered by importance.
Free · No credit card required · Ready about 1 to 3 minutes after you confirm your email
The button runs our free store audit. This page's checks are part of its report.
Core Web Vitals We Measure
The Google PageSpeed metrics that describe how fast your pages load and respond.
Largest Contentful Paint (LCP)
Measures how fast the main content of the page appears.
Cumulative Layout Shift (CLS)
Measures visual stability: how much the page moves around while it loads.
First Contentful Paint (FCP)
Measures how long until the browser shows the first content on the page.
Total Blocking Time (TBT)
Measures JavaScript execution overhead and main-thread responsiveness before the page becomes fully interactive.
Mobile Performance Score
Google PageSpeed’s mobile test, which simulates a phone on a slower mobile network.
Desktop Performance Score
Google PageSpeed’s desktop test and performance score.
Need more than a speed score?
Run a full audit to get speed issues ordered by importance, with Shopify fix steps.