Your store is slow. Fix it before customers leave.
A Shopify performance monitoring app that tracks page speed, Core Web Vitals, and identifies what's slowing your store down. Get actionable insights to improve load times and boost conversions.
No card. Cancel anytime. Install from the Shopify App Store.
Test your store’s speed in seconds
Enter your store URL for a live PageSpeed score, Core Web Vitals, and what’s slowing you down.
Everything you need to performance monitoring.
Speed Dashboard
Monitor your store's performance at a glance. See page load times, Lighthouse scores, and performance trends across all your key pages.
Core Web Vitals
Track LCP, CLS, and INP in real-time. Know exactly where you stand against Google's Core Web Vitals thresholds.
App Impact Analysis
See which installed apps are slowing your store down. Get impact scores for every app so you can make informed decisions.
Theme Performance
Analyze your theme's JavaScript, CSS, and asset performance. Identify render-blocking resources and optimization opportunities.
Automated Alerts
Get notified when performance drops below your thresholds. Catch speed regressions from theme updates or new app installs instantly.
Historical Tracking
Track performance over time with detailed historical data. Correlate speed changes with deployments, app installs, and traffic spikes.
Pricing that scales with you.
14-day free trial on every plan. No card required. Cancel anytime.
How does Speedscope measure page speed?
Speedscope uses real browser measurements (Lighthouse and Chrome UX Report data) to track your store's actual performance. We measure page load time, Core Web Vitals (LCP, INP, CLS), and asset sizes across your key pages.
Will Speedscope slow down my store?
No. Speedscope runs measurements externally - it doesn't inject any JavaScript into your storefront. The app itself has zero impact on your store's customer-facing performance.
What are Core Web Vitals and why do they matter?
Core Web Vitals are Google's metrics for page experience: Largest Contentful Paint (loading), Interaction to Next Paint (interactivity), and Cumulative Layout Shift (visual stability). They directly affect your Google search ranking and customer experience.