Performance score
From 0 to 100, calculated by Lighthouse in PageSpeed Insights. By Google's standard, 90 or above is good, 50 to 89 needs improvement and below 50 is poor.
Free tool
Shopify speed test
See how fast your store loads on mobile: the PageSpeed performance score and the metrics Google uses to measure the shopping experience.
How it works. The test runs Google's PageSpeed Insights on the mobile version of your store's homepage. It takes 20 to 60 seconds, and the score varies a little on each run. We also check the page code for scripts that trick the measurement: if we find one, we let you know the score doesn't reflect the real speed.
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What the test measures
LCP · largest image
How long the largest image or text block on screen takes to appear, usually the hero banner or product photo.
TBT · blocking time
How long the page stays frozen, not responding to taps, while it loads.
CLS · layout shifts
How much the layout jumps while loading, like a button that moves just as you tap it.
How to use it
Type your URL
Your store's domain, like yourstore.com.
See the result
The score and metrics show up in seconds, in a terminal.
Get the full analysis
On WhatsApp, with the Dash team.
Want a higher score?
We find what slows your store down and fix it on a copy of your theme, with no score-faking tricks. Learn about our Shopify speed optimization: quoted per project, in 1 to 2 business days.
Frequently asked questions
How do I test my Shopify store speed?
Type your store URL in the field above. The test shows your mobile performance score and the LCP, TBT and CLS metrics. The test uses Google's PageSpeed Insights, the same tool Google uses to assess pages.
What is a good PageSpeed score?
By Google's standard, 90 or above is good, 50 to 89 needs improvement and below 50 is poor.
Why is my mobile score lower than desktop?
PageSpeed's mobile test simulates a slower device and a mobile connection, so the same store usually scores lower on mobile. It is the score that matters most, since a big share of visits come from phones.
Where do the test numbers come from?
From Google's PageSpeed Insights, mobile test. When your store has enough traffic, we also show real Chrome user data (LCP, INP and CLS over the last 28 days). For a full analysis, message us on WhatsApp.
Is the test free?
Yes, the test is free and requires no sign-up.