Free E-Commerce Performance Diagnostics
Fast, anonymous diagnostic tools engineered specifically for modern e-commerce storefronts. No registration or credit card required.
Free E-Commerce Performance Audit
Full passive HTTP inspection, Headless Chromium Lab analysis, and Google CrUX field assessment for any public storefront.
Core Web Vitals Field vs Lab Checker
Compare your store's real 28-day Chrome user experience (CrUX) against instant synthetic laboratory measurements.
Third-Party Script Cost Explorer
Discover which advertising pixels, tracking tags, and customer review widgets are blocking your browser main thread.
Shopify App Impact Checker
Detect observed third-party assets and scripts on Shopify themes, and benchmark potential checkout input delay.
Server TTFB & Global Latency Inspector
Measure DNS resolution, TLS handshake, server response time, and edge cache hit status (Cloudflare, Fastly).
Storefront Performance Change Diff
Compare before and after snapshots between releases, app installs, or staging environments to isolate regressions.