LCP
Largest Contentful Paint
11.7s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Render-Blocking CSS
How to optimize glowflowmethod.com
Eliminate Render-Blocking CSS
High Impact+18 points estimated
Why It Matters
CSS files are blocking initial page render and delaying First Contentful Paint by 300ms.
How to Fix
Inline critical above-the-fold CSS directly in your Shopify theme's layout/theme.liquid file within <style> tags. Defer non-critical CSS using media='print' onload="this.media='all'" technique. Move the accelerated-checkout CSS to load after page interactive since it's not immediately visible.
0Needs Improvement
What This Score Means
A score of 55 falls in the "Needs Improvement" 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
227ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.00
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This Shopify store has poor performance with a score of 55/100, primarily due to excessive unused JavaScript and CSS that's slowing down the site. The biggest culprit is over 538KB of unused JavaScript from YouTube embeds and Shopify modules, which is delaying your First Contentful Paint by nearly 3 seconds and pushing your Largest Contentful Paint to a slow 11.7 seconds. Removing or deferring this unused code, along with optimizing the 131KB of unused CSS, could dramatically improve your Core Web Vitals and boost your performance score by 30+ points. Additionally, optimizing your images and fixing render-blocking resources would provide further speed improvements for your customers.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+25 points estimatedWhy It Matters:
538 KiB of unused JavaScript is delaying LCP by 2.45 seconds and blocking user interactions.
How to Fix:
Remove or defer the YouTube embed player scripts that load 538KB unused code. Use YouTube's lite-embed or facade loading instead. In Shopify, edit your theme's template files to replace the full YouTube embed with a lightweight preview image that loads the player only on click.
Optimize Image Delivery Sizes
Medium Impact+8 points estimatedWhy It Matters:
Oversized images waste 42 KiB and delay LCP, especially the hero product image at 665x665 displaying at wrong dimensions.
How to Fix:
In Shopify Admin, regenerate product images at correct display sizes using the built-in image transformation URLs. Update your theme's product card template to use responsive srcset with proper sizes attribute. Set the hero image dimensions to match actual display size of 665x665 pixels.
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Related Performance Analyses
More Shopify Speed Tests
Shopify Performance Resources
Optimize Image Delivery Sizes
Oversized images waste 42 KiB and delay LCP, especially the hero product image at 665x665 displaying at wrong dimensions.
Remove Unused JavaScript Code
538 KiB of unused JavaScript is delaying LCP by 2.45 seconds and blocking user interactions.
Implement Responsive Image Optimization
Images waste over 1MB of bandwidth with the 3d_blade_sign.jpg alone being 870KB oversized, significantly impacting load performance.
Optimize JavaScript Execution Time
JavaScript blocks the main thread for 5.4 seconds and creates 1,100ms of Total Blocking Time, severely impacting user interactions and Core Web Vitals.