Superspeed
Superspeed
STORE CONVERSION BENCHMARK

Stirlingkit Revenue Leak Analysis

Despite having a highly responsive architecture (INP: 153ms), Stirlingkit is bleeding revenue before shoppers even see their products. An agonizingly slow LCP of 2.7s forces paid traffic to stare at a blank screen, directly causing massive ghost checkouts.

UX & Conversion Grade

B

Based on Chrome UX friction data

Core Web Vitals

Largest Contentful Paint

2.7s

Measures loading performance. Slow LCP directly correlates to higher cart abandonment rates.

Cumulative Layout Shift

0.09

Measures visual stability. High CLS causes mis-clicks and immediate user frustration (bounces).

Interaction to Next Paint

153ms

Measures responsiveness. High INP values result in "rage clicks" when users try to add items to their cart.

Time to First Byte

549ms

Server response time. High TTFB indicates unoptimized backend queries or missing Edge caching.

First Contentful Paint

1.5s

First visual feedback. High FCP means users stare at a blank white screen before the site loads.

INTERLINKED BENCHMARKS

Explore Related Store Audits

Compare Core Web Vitals and revenue friction across neighboring Shopify merchant stores.

V

Velocity Ammunition Sales

www.velocityammosales.com
A
LCP: 1.9s INP: 87ms
M

MyBageecha

mybageecha.com
A
LCP: 2.0s INP: 149ms
N

Nature Republic USA Official

www.naturerepublicusa.com
A
LCP: 2.0s INP: 119ms
C

Cloud Nine®

www.cloudninehair.com
A
LCP: 1.3s INP: 127ms
F

Fluffnest

fluffnest.com
A
LCP: 2.1s INP: 181ms
B

Bravo Sierra

www.bravosierra.com
A
LCP: 1.7s INP: 106ms
E

Elmhurst 1925

elmhurst1925.com
A
LCP: 1.8s INP: 153ms
S

Swimwear World

www.swimwearworld.com
A
LCP: 1.9s INP: 157ms

Everything you need

Revenue Intelligence

Revenue Leak Detection

Superspeed's Predictive Conversion Engine correlates session performance with cart telemetry. We calculate the exact conversion rate difference between visitors experiencing "fast" loads and "slow" loads to output the precise amount of revenue lost—all without giving away the secret sauce.

Revenue Intelligence

Ghost Checkouts & Rage Clicks

Our Abandoned Cart Killer algorithm captures rapid, repeated clicks on unresponsive elements and links them to cart abandonment. We calculate the value of these ghost checkouts to evaluate recovery opportunities and pinpoint exactly where shoppers are dropping off.

Performance Optimization

Predictive Prerendering & Speculative Engine

Superspeed Neural Navigation Engine™ analyzes real-time user hover, touchstart, and purchase probability telemetry. Milliseconds before a shopper clicks a link, our active engine dynamically injects full Chrome speculation rules to pre-render the target page off-screen.

Performance Optimization

Automated Speed Engine

Superspeed uses a multi-tiered predictive algorithm that analyzes checkout data to figure out exactly what your customers want to buy before they even click. We pre-render the highest converting pages in the background, resulting in a zero-latency buyer journey.

Performance Optimization

Social Media Browser Bypass

When social traffic arrives, we detect the slow in-app browser and automatically bust the user out into their native browser (like Safari or Chrome), restoring Apple Pay and unlocking maximum conversion potential.

Revenue Intelligence

Automated Health Audits

Our structured insights engine evaluates your store telemetry daily to automatically uncover hidden health warnings. We prioritize the exact fixes that will increase your store's speed without requiring an engineering degree.

Loved by Merchants

Join thousands of Shopify store owners who have successfully plugged their revenue leaks.

View Wall of Love Read Case Studies

"The team is very enthusiastic. My store performance score has risen from 17 to 38. Thank you very much"

Jackery Japan
Japan
J

"I really enjoyed working with Superspeed and you have had the best support of any app provider I have ever met. I am a huge supporter and will always be a fan!"

TravelPro
United States
T

"This is the best app out there because it does exactly what the title says "Superspeed". My store wasn't performing at its best. Now it is! Also, the Customer Service is amazing. They always respond and they're very patient. Thank you!"

BellaRose Beauty Collections
United States
B

"We were unsure whether to go for the starter plan or Unlimited because of the price difference. We thought is it too good to be true?? We plumped for the Unlimited one and we're very impressed. Really easy to setup and within a day it's doing the job. Really happy."

Neon Vibes UK
United Kingdom
N

"100% satisfied with the service from Super Speed support team, they have solved our web core vistals issues and our SEO ranking improved after the fix! Recommended"

Hangersforless
Australia
H

"Yeah, this app does what it says. It couldn't have been easier (literally one click) and the app is incredibly effective. The only thing better than the app is the customer service. They are a delight to work with."

Davek Canada
United States
D

"Really incredibly good contact and honest advice on store speed. I would like to thank you very much for the nice mail contact and the advice..."

Paintball Buddy
Germany
P

"Fantastic Support, Fixed my main thread issues, support comes with thorough explanations and educational materials."

Cascadian Water
United States
C

"My store speed almost doubled since we installed this app. The customer support is also wonderful and very helpful."

Aurum Brothers
Netherlands
A

Frequently Asked Questions

Everything you need to know about this feature.

What is the UX score for Stirlingkit?

Based on real user data, Stirlingkit has an overall performance grade of B. Their Largest Contentful Paint (LCP) is 2.7s, which directly impacts how quickly shoppers can view products.

Which theme is running on www.stirlingkit.com?

Why does Stirlingkit have high cart abandonment?

Why is Stirlingkit slow to respond when clicking?

Is Stirlingkit's website visually stable?

Does Stirlingkit use Shopify Plus?

Can Superspeed fix www.stirlingkit.com?

What are the next steps for the Stirlingkit engineering team?

How much money is Stirlingkit losing to slow load times?

Does Stirlingkit need a headless Shopify build?

What is the biggest revenue leak on www.stirlingkit.com?

How can Stirlingkit improve their conversion rate?

Why is the Stirlingkit cart page so slow?

Is Stirlingkit's mobile experience optimized?

How does Stirlingkit's speed compare to competitors?

Latest from the Lab

Explore our newest strategies for zero-latency commerce.

Jul 30, 2026

Google Search Console Adds Social Media Profile Properties: How Brands Can Track and Capture Social Search Revenue

Google Search Console now allows brands to add Instagram, TikTok, X, and YouTube as property types. Here is how to track social search performance and prevent in-app browser conversion leaks.

Jul 23, 2026

Google AMP Is Obsolete for Shopify Stores in 2026: Why You Should Remove Accelerated Mobile Pages Immediately

Accelerated Mobile Pages (AMP) are officially dead on Shopify. Browsers actively block AMP caches, Google removed the AMP badge requirement, and AMP plugins cripple modern Shopify themes. Here is the definitive 2026 engineering guide to removing AMP and boosting Core Web Vitals natively.

Jul 23, 2026

The Ultimate Guide to Fixing Shopify CLS & Font Loading: Eliminate Layout Shift & Protect Conversions

Most Shopify merchants spend weeks compressing images and removing apps to fix Lighthouse CLS warnings—only to discover the real culprits were FOIT/FOUT font swaps, un-dimensioned headers, and dynamic app widgets. Here is the definitive engineering teardown, merchant framework, and step-by-step fix.

Jul 22, 2026

How to Build Recurring Revenue with Shopify Apps: The App Affiliate Guide

Discover how agencies, developers, and creators build $5,000+/mo in recurring passive income by partnering with mission-critical Shopify apps with sub-3% churn.

Jul 17, 2026

How to use Shopify Flow to automatically recover Ghost Checkouts

Jul 17, 2026

Shopify A/B Testing vs Revenue Intelligence: Which Actually Increases Sales?

A/B testing promises optimization but delivers anxiety, slow results, and split traffic. Here's why real-time Revenue Intelligence — rage clicks, ghost checkouts, and RUM data — is replacing it for Shopify brands in 2026.

Jul 17, 2026

Shopify Image Optimization: The Hidden CLS Tax Destroying Your Mobile Conversions

Our data from 51 million sessions shows desktop CLS is 2.3× worse than mobile — and it's almost entirely caused by un-dimensioned images loading without reserved space. Here's the complete Liquid and CSS playbook to eliminate Cumulative Layout Shift on Shopify permanently.

Jul 17, 2026

Shopify LTV & CAC: The Complete Guide to Customer Lifetime Value (And Why Speed Changes Everything)

Your LTV and CAC numbers are probably wrong — and your store's performance is why. Here's how to calculate both correctly, and the data showing why a 1-second improvement in page speed changes your payback period permanently.

Jul 17, 2026

Shopify Mobile Optimization: Why 66% of Your Traffic Converts Like 30% of Your Revenue

Two-thirds of Shopify traffic arrives on mobile. But mobile checkout completion is 5.4 percentage points behind desktop, and mobile UI extension crashes happen nearly twice as often. Here's the complete technical playbook — built on real session data — to close the gap.
KNOWLEDGE BASE

View All Articles & Teardowns

Explore our complete library of Shopify speed optimization teardowns, Liquid performance guides, and revenue conversion benchmarks.

Browse All Posts →