Every 100ms of checkout delay is a transaction you didn't close.
Find out exactly how much your Shopify or ecommerce site is losing to slow page speed — then monitor product pages, cart, and checkout so your team knows the moment a release breaks revenue.
What a 3-day undetected regression costs.
This is what happens without AuditJet:
Every page in your funnel, watched 24/7.
Performance on these four pages determines your revenue.
Product Pages
First impression. Hero image LCP = add-to-cart intent.
Cart
Commitment point. Slowness here = abandonment.
Checkout
Revenue moment. Every millisecond is money.
Order Confirmation
Trust signal. Slow = refund requests.
Your revenue. Your numbers.
What a 1-second LCP regression costs a typical ecommerce store:
AuditJet catches the regression before it compounds.
Frequently asked questions
How does page speed affect ecommerce conversion rates?
Conversion rate sensitivity to load time is steepest at the checkout stage. A 1-second increase in LCP on a product page reduces add-to-cart rates by roughly 12%, while a 3-second LCP on the checkout page is associated with an 18% drop in completed purchases. AuditJet tracks these figures against your actual monthly traffic and average order value so every regression comes with an estimated dollar loss — not just a score.
Which pages matter most for ecommerce performance monitoring?
The four pages that determine ecommerce revenue are product detail pages, category listing pages, the cart, and checkout. Product pages set the first impression — a hero image with an LCP above 2.5 seconds measurably suppresses add-to-cart intent. Checkout is where money actually changes hands, making any latency regression directly visible in daily transaction data. AuditJet monitors all four page types on an hourly schedule with mobile throttling enabled.
How does AuditJet calculate revenue impact for ecommerce sites?
AuditJet maps your current LCP value against a conversion rate impact coefficient derived from published performance research, then multiplies the projected conversion loss by your monthly revenue to produce an hourly and monthly at-risk figure. You input your monthly visits and average order value once; AuditJet recalculates the revenue exposure automatically every scan cycle so the number stays current as your traffic patterns change.
What Core Web Vitals failures are most common on ecommerce sites?
The most frequent Core Web Vitals failures on ecommerce sites are LCP regressions caused by unoptimised product hero images, CLS shifts triggered by late-loading size-selector or promo-banner elements, and INP degradation from heavy JavaScript during cart quantity updates. AuditJet's AI-generated fix blueprints name the specific element causing each failure and suggest the precise code change — image preloading, reserved space declarations, or script deferral — needed to pass.
How fast can AuditJet detect a regression on a checkout page?
AuditJet runs synthetic Lighthouse scans on a configurable schedule; on the Pro plan the minimum scan interval is hourly. If a deploy ships at 2:14 PM and breaks checkout LCP from 1.8 seconds to 4.3 seconds, AuditJet fires a Slack or email alert by 3:14 PM at the latest — typically within the next scan cycle after the deploy completes. Teams on the standard nightly check using Google Search Console would not see the same regression for 24–72 hours.
Your checkout has been slow since Tuesday. Let's fix that.
Detect performance regressions in under 5 minutes. Free audit, no account required.