E-commerce speed checker
Every second of delay costs you sales. Test your e-commerce site's performance, find the bottlenecks, and get a prioritized fix list — free.
Real Chrome · Lighthouse v12 · CrUX field data
Why store speed matters
Research consistently shows that every 100ms of added latency costs e-commerce sites 1% of revenue. For a store doing $50K/month, a 1-second improvement could mean $6K more per year.
What you get
See your store's overall performance grade and how it compares to Google's thresholds. Covers performance, accessibility, best practices, and SEO.
E-commerce sites are heavy with tracking pixels, chat widgets, and payment scripts. The waterfall exposes exactly which third-party scripts slow your store.
See which element is your Largest Contentful Paint — hero image, product photo, or text block. Know exactly what to optimize for faster perceived load.
Every fix is prioritized by estimated time savings. For e-commerce, faster pages mean more conversions — each recommendation is directly tied to revenue.
Research consistently shows that every 100ms of added load time costs e-commerce sites approximately 1% of revenue. A 1-second delay in page load can reduce conversions by 7%. For a store doing $50K/month, improving load time by 1 second could mean an additional $3,500-6,000 per year.
Yes. DebugUtils tests any publicly accessible URL, including Shopify, WooCommerce, Magento, BigCommerce, and custom e-commerce stores. Just paste your store's URL and get a full performance report with scores, waterfall, and fix recommendations.
The top issues are: unoptimized product images (often 500KB+ each), too many tracking pixels and analytics tags loading synchronously, render-blocking theme JavaScript, heavy chat widgets loading on every page, and no lazy loading for below-the-fold images. The DebugUtils waterfall reveals all of these.
Yes. Google uses Core Web Vitals as a ranking signal for both organic search and Google Shopping results. Stores that pass Core Web Vitals thresholds get a ranking advantage. DebugUtils shows your Core Web Vitals alongside your Lighthouse scores so you can see exactly where you stand.
Every DebugUtils report has a permanent, shareable URL. Run a test, copy the link, and send it to your developer. They'll see the full waterfall, metrics, filmstrip, and prioritized fix list — everything they need to start optimizing.
Paste any URL. We handle normalization, redirects and protocol detection.
A real Chrome browser runs Lighthouse and captures network data, screenshots and video.
Scores, metrics, waterfall, filmstrip, video and recommendations — ready in under 2 minutes.
Results are shareable via URL and stored for 90 days. No account needed.