LCP
Largest Contentful Paint
8.9s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize LCP Image Loading
How to optimize sinai.ai
Optimize LCP Image Loading
High Impact+15 points estimated
Why It Matters
LCP image lacks priority hints and compression, contributing to the 8.9 second LCP time.
How to Fix
Add fetchpriority='high' attribute to the hero image. Compress the main product image from 58KB to ~30KB using modern formats. Implement proper responsive image sizing to match display dimensions (currently serving 984x630 for 721x443 display).
0Needs Improvement
What This Score Means
A score of 61 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
175ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.07
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This website has poor performance with a score of 61/100, primarily due to an extremely slow Largest Contentful Paint of 8.9 seconds - nearly triple the recommended threshold. The main culprit is excessive unused JavaScript (598 KB worth) that's blocking the page from loading efficiently, combined with oversized images that could be compressed by 125 KB. The site is also downloading a massive 14+ MB of resources, including duplicate video files that are unnecessarily inflating the payload size. Removing unused JavaScript, optimizing image compression, and eliminating duplicate resources could dramatically improve load times and boost the performance score by 30+ points.
Other Optimization Recommendations
Remove Unused JavaScript Dependencies
High Impact+25 points estimatedWhy It Matters:
598 KiB of unused JavaScript is delaying LCP by 2.1 seconds and blocking main thread execution.
How to Fix:
Audit Lottie animations, Three.js 3D effects, and shader gradient components - remove if not essential for above-the-fold content. Code-split remaining JavaScript using dynamic imports to load only when needed. Replace heavy animation libraries with CSS alternatives where possible.
Reduce Network Payload Size
Medium Impact+10 points estimatedWhy It Matters:
14.3MB total payload includes duplicate video files that slow initial page loads.
How to Fix:
Remove duplicate MP4 video references (same 1.9MB file loaded 3 times). Implement video lazy loading for below-the-fold content. Consider replacing heavy video backgrounds with optimized images or CSS animations for faster initial render.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Reduce JavaScript Bundle Size
Unused JavaScript totals 631 KiB and causes 3.9 seconds of blocking execution time.
Optimize Image Delivery and Compression
Images waste 1,353 KiB and delay LCP by 1.55 seconds due to oversized files and poor compression.
Eliminate Multiple Page Redirects
The redirect from farmito.cz to www.farmito.cz delays LCP by 780ms and adds unnecessary latency.
Reduce Network Payload Size
14.3MB total payload includes duplicate video files that slow initial page loads.