Store Conversion Benchmark

Function18 Revenue Leak Analysis

Based on our latest Chrome UX analysis, Function18 is losing a significant amount of revenue to poor mobile performance. Their LCP of 2.7s causes immediate bounces, while their unresponsive INP of 267ms frustrates the few shoppers who actually make it to checkout.

UX & Conversion Grade

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

0.01

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

Interaction to Next Paint

267ms

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

Time to First Byte

833ms

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

First Contentful Paint

2.5s

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

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.

Revenue Intelligence

Real User Monitoring (RUM)

Our silent cart telemetry gathers stats directly from visitor browsers in the background. It seamlessly tracks Web Vitals and network latency, causing zero interference with the actual buyer journey.

Performance Optimization

AI-Driven Prerendering

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

Automated CLS Prevention

Our layout stabilizing engine seamlessly locks unstable images in place before your page even loads, preventing frustrating misclicks and creating a smooth, unshakeable browsing experience.

Performance Optimization

Inline Script Sandboxing

Our Smart Blocker automatically sandboxes third-party scripts, stopping them from running until your main product page is completely interactive. Keep your marketing attribution intact while boosting performance.

Loved by Merchants

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

View Wall of Love Read Case Studies

"I am beyond satisfied with this app. For literal years I've been trying to improve the speed of my shopify theme. This has made the biggest difference. Wonderful experience working with Dan, too."

SuzanneSomers.com

United States

"Incredible application and support of rare quality. Expertise better than agency. A truly competent developer who will help you gain traffic following white hat recommendations. Please install the application and open a ticket to learn more about what this team could bring to your website. Thanks to Dan"

ÉCLAIRAGE FRANÇAIS

France

"Amazing level of service! Not so much an app as "an app plus a guy who knows everything and doesn't seem to sleep". Phenomenal service."

The Bullish Store

United States

"A very, very good app, one of the few that really keeps what it promises! Once activated, the speed improves greatly and upon request via email, Dan continues to improve the speed manually and quickly. A great app and a great team. Many thanks from Germany Steffen"

Zimt&Pfeffer

Germany

"Hallo wir können die App nur empfehlen. Hilft uns sehr die Geschwindigkeit zu bekommen. Der Support ganz besonders Dan. Also er ist einfach Spitze und sehr bemüht alles zu machen. Wirklich sehr gut. Danke"

SHOP by AWK Flagship

Austria

"The founder and team of this company are impressive, my website score has improved from 27 points to 55 points, like magic, hope for long-term stable cooperation in the future"

ITAPNO

China

"The best app for improving speed and google core vitals out there. Not only the app works, but their service is incredible, they go well beyond! totally recommended."

ROBERTA

Spain

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

Aurum Brothers

Netherlands

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

Jackery Japan

Japan

Frequently Asked Questions

Everything you need to know about this feature.

Does Function18 have good Core Web Vitals?

Our analysis shows www.function18.com earns a B grade for mobile UX. With an LCP of 2.7s and an INP of 267ms, this metric indicates the level of friction customers experience at checkout.

What Shopify theme does Function18 use?

How does Function18's LCP affect revenue?

How responsive is the www.function18.com checkout?

Does Function18 have mis-click issues?

Does Function18 need a headless Shopify build?

What are the next steps for the Function18 engineering team?

How does Function18's speed compare to competitors?

Is Function18's mobile experience optimized?

How much money is Function18 losing to slow load times?

Does Function18 use Shopify Plus?

How can Function18 improve their conversion rate?

Can Superspeed fix www.function18.com?

What is the biggest revenue leak on www.function18.com?

Why is the Function18 cart page so slow?

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