LCP
Largest Contentful Paint
6.5s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Remove Unused JavaScript Code
How to optimize dezifoster.com
Remove Unused JavaScript Code
High Impact+10 points estimated
Why It Matters
96KB of unused JavaScript delays LCP by 450ms and blocks page interactivity.
How to Fix
Defer Google Analytics loading until after page load using gtag's config with send_page_view: false. Replace full Swiper bundle with custom build containing only needed modules. Minify all JavaScript files including Bootstrap, Swiper, and Isotope libraries to save additional 47KB.
0Needs Improvement
What This Score Means
A score of 64 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
69ms
Good
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 website has poor performance issues with a score of 64/100, primarily caused by an extremely slow Largest Contentful Paint of 6.5 seconds - nearly triple the recommended threshold. The biggest problems are render-blocking CSS that delays initial page display by 300ms, along with 96KB of unused JavaScript and 70KB of unused CSS that are unnecessarily slowing down the site. Additionally, images are poorly optimized and oversized, wasting 108KB of bandwidth, while unminified JavaScript files add another 46KB of bloat. Addressing these issues by optimizing the CSS delivery, removing unused code, and properly sizing/compressing images could dramatically improve the performance score and cut loading times in half.
Other Optimization Recommendations
Eliminate Render Blocking CSS
High Impact+12 points estimatedWhy It Matters:
The main CSS file blocks rendering for 2.2 seconds, delaying both FCP and LCP by 300ms.
How to Fix:
Split styles.pure.css into critical above-the-fold CSS (inline in <head>) and non-critical CSS (load with media='print' then switch to 'all'). Use tools like Critical or PurgeCSS to identify critical styles. Remove 90% unused CSS from Font Awesome by using only required icons.
Optimize Image Delivery Performance
Medium Impact+8 points estimatedWhy It Matters:
Poor image optimization wastes 108KB bandwidth and delays LCP by 150ms.
How to Fix:
Compress the hero banner image more aggressively while maintaining quality. Serve responsive images using srcset attribute for different screen sizes. Add explicit width and height attributes to all images to prevent layout shifts. Convert remaining JPG images to WebP format.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Remove Unused JavaScript Code
60KB of unused JavaScript from Google Analytics delays LCP by 750ms and wastes bandwidth.
Eliminate Render Blocking Resources
CSS and fonts block initial render, delaying both LCP and FCP by 350ms each.
Implement Efficient Cache Headers
Missing cache headers force re-downloading of 257KB assets on every visit, delaying LCP by 900ms.
Optimize Image Delivery Performance
Poor image optimization wastes 108KB bandwidth and delays LCP by 150ms.