Measure real performance and get platform-specific fixes for faster loading. RankCart measures your Core Web Vitals, finds what is slowing your pages down, and explains each fix in plain language.
We run Google PageSpeed Insights on your page for mobile and desktop. Where Google has field data from real Chrome users, we report it ahead of the lab result.
RankCart shows what is making your pages slow, such as large images, heavy apps, render-blocking resources or slow hosting, and ranks the fixes by impact.
Fixes are written for your platform. Whether you use Shopify, WooCommerce or a custom store, we explain how to make each change.
Re-run the audit after each fix to see your scores change, and get a weekly email summary of where your store stands.
Every 100ms of delay costs you 1% in conversions. A site that loads 1 second faster can see a 7% increase in sales.
Google uses Core Web Vitals as a ranking factor, so a faster store has an edge over slower competitors in search results.
Mobile users are especially sensitive to slow pages. 70% of users abandon sites that take more than 3 seconds to load.
Visitors leave slow pages. Faster pages keep them on your site long enough to browse and buy.
Each audit scores mobile and desktop separately and uses the weaker of the two, so a slow mobile experience is not hidden by a fast desktop one.
No technical jargon. We explain what is slow, why it matters and how to fix it.
Core Web Vitals are three Google metrics that measure page experience: Largest Contentful Paint (LCP, loading speed), Interaction to Next Paint (INP, responsiveness), and Cumulative Layout Shift (CLS, visual stability). Google uses these as ranking factors. Sites with poor Core Web Vitals rank lower in search results and have higher bounce rates.
Every 100ms delay in page load time can decrease conversion rates by 1%. A site that loads 1 second faster can see a 7% increase in conversions. For eCommerce stores, page speed directly impacts both search rankings and customer behavior.
Common causes include: unoptimized product images, too many apps (especially on Shopify), slow external scripts, render-blocking CSS/JavaScript, poor hosting, and large third-party fonts. RankCart identifies the specific bottlenecks on your store.
No. The fixes we suggest are written for your platform (Shopify, WooCommerce and others), and many are simple configuration changes.
Start a free page speed audit. We'll measure your Core Web Vitals and show you what is slowing your store down.
Learn More
What Core Web Vitals measure, and how to improve them on an online store.
Read the full guide →