LCP
Largest Contentful Paint
32.2s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize Critical Image Delivery
How to optimize kooksheaders.com
Optimize Critical Image Delivery
High Impact+15 points estimated
Why It Matters
Large unoptimized images delay LCP by 650ms and consume 1.1MB of unnecessary bandwidth.
How to Fix
Convert the 1.25MB PNG popup image to WebP format for 80% size reduction. Implement responsive images with proper sizing for the footer logo (displayed at 501x122 but served at 1008x246). Use Shopify's image transformation API with format=webp and width parameters.
0Poor
What This Score Means
A score of 40 falls in the "Poor" range (50-89). While it is better than poor (0-49), you should aim for 90+ to provide an optimal user experience and maximize SEO benefits.
This site is slower than approximately 35% of similar sites. The main issues affecting performance are image optimization, JavaScript execution time, and layout stability.
Addressing these issues could improve your conversion rate by 15-20% and boost your search engine rankings.
Core Web Vitals Analysis
INP
Interaction to Next Paint
235ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.02
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This Shopify site has severe performance issues with a score of just 40/100. The biggest problem is excessive JavaScript execution taking 3.6 seconds, which is blocking the page from loading properly and causing terrible user experience metrics - your largest content doesn't appear until 32 seconds! The site is loading nearly 1MB of unused JavaScript from tracking scripts and chat widgets that could be deferred or removed. Additionally, unoptimized images are wasting over 1MB of bandwidth, and the main slideshow component is causing significant layout shifts. Reducing JavaScript bloat, optimizing images to modern formats like WebP, and fixing the slideshow performance could easily improve your score by 30+ points and dramatically speed up the site.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+18 points estimatedWhy It Matters:
940KB of unused JavaScript delays LCP by 1.2 seconds and blocks critical rendering.
How to Fix:
Remove or defer non-essential third-party scripts like Shopify Chat widget and redundant Google Analytics tags. Use Shopify's Script Tag API to load analytics asynchronously. Consider removing duplicate slideshow vendor files that are loaded multiple times.
Reduce JavaScript Execution Time
Medium Impact+12 points estimatedWhy It Matters:
3.6 seconds of JavaScript execution creates 730ms of blocking time, preventing user interactions.
How to Fix:
Split large JavaScript bundles using Shopify's native code splitting. Move slideshow initialization to load after page interactive. Optimize Angular components to use OnPush change detection strategy to reduce rendering cycles.
Keep Your Site Fast After Optimization
Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.
Explore DeployHQ →Trusted by engineering teams shipping high-performance sites
Want to Analyze YOUR Website?
Get AI-powered performance insights with actionable fixes in 30 seconds
Related Performance Analyses
More Shopify Speed Tests
Shopify Performance Resources
Eliminate Render-Blocking CSS
Blocking CSS files delay First Contentful Paint by 410ms, slowing initial page render.
Reduce JavaScript Execution Time
JavaScript blocks the main thread for 5.3 seconds, preventing user interactions and delaying page responsiveness.
Fix Layout Shifts from Images
Unsized images cause major layout shifts (CLS 0.304) that hurt user experience and rankings.
Reduce JavaScript Execution Time
3.6 seconds of JavaScript execution creates 730ms of blocking time, preventing user interactions.