Free performance tool
Shopify Speed Analyzer
Test your store, review key loading metrics, and find the highest-impact speed improvements.
Testing uses Google PageSpeed Insights. Results can vary between runs.
Ready when your store is
Enter a public store or page URL above to start the test.
Running a real performance test…
This often takes 20-60 seconds. Please keep this tab open.
We could not complete that test
Check that the page is public, then retry. The testing service can also be temporarily rate-limited.
Performance report
Prioritized opportunities
Start at the top, but test business impact before removing store features.
What slows Shopify stores down?
App and tag JavaScript
Review scripts from apps, analytics, chat, reviews, and marketing tags.
Unoptimized media
Resize images to rendered dimensions and avoid autoplaying heavy video above the fold.
Theme code
Remove unused sections and libraries; defer work that is not needed for the first screen.
Layout shifts
Reserve image, banner, and app-widget space so content does not jump while loading.
Test the right pages
Your homepage is not the whole store. Test your highest-traffic product, collection, campaign landing, cart, and a content-heavy page on mobile.
Shopify speed FAQs
What is a good Shopify speed score?
A Lighthouse performance score of 90 to 100 is considered good, 50 to 89 needs improvement, and below 50 is poor. Treat the score as a diagnostic indicator and prioritize real-user Core Web Vitals and conversion impact.
Why is my Shopify mobile score lower than desktop?
Mobile tests simulate a slower device and network, exposing heavy JavaScript, large images, app code, and rendering delays that powerful desktop devices can hide.
Do Shopify apps slow down a store?
Apps can add scripts, styles, tracking, and network requests. Some are essential and well optimized; others add meaningful delay or leave code behind after removal. Audit impact before removing revenue-critical functionality.
How can I improve Shopify speed?
Start with oversized images, video loading, unused app scripts, third-party tags, theme JavaScript, font loading, and layout shifts. Measure before and after each change on representative product and collection pages.
Need expert Shopify optimization?
We improve speed without blindly removing the apps and features that drive revenue.
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