LCP
Largest Contentful Paint
9.3s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Render Blocking Resources
How to optimize alma.demenagement.fr
Eliminate Render Blocking Resources
High Impact+18 points estimated
Why It Matters
CSS and font files are blocking initial page render for 1.2 seconds, significantly delaying First Contentful Paint.
How to Fix
Inline critical CSS for above-the-fold content in Rails views. Use font-display: swap for Google Fonts in your CSS. Defer non-critical CSS using Rails asset pipeline with media='print' onload tricks or preload with low priority.
0Needs Improvement
What This Score Means
A score of 65 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
196ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.03
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 65/100, primarily due to extremely slow loading times where the Largest Contentful Paint takes 9.3 seconds. The biggest issue is render-blocking resources (CSS and fonts) that delay initial page rendering by an estimated 1,200ms, combined with unoptimized images that could save 704KB in file size. The site also suffers from 289KB of unused JavaScript from Google Analytics and other scripts that aren't needed immediately. Fixing the render-blocking resources, compressing images, and deferring unnecessary JavaScript could easily improve the performance score by 20-30 points and dramatically reduce load times for users.
Other Optimization Recommendations
Fix LCP Image Loading Priority
High Impact+25 points estimatedWhy It Matters:
The LCP image has lazy loading applied and lacks fetchpriority=high, delaying the largest contentful paint by critical seconds.
How to Fix:
Remove loading='lazy' from the hero image (les-lacs-du-connemara-standard.jpg). Add fetchpriority='high' to the LCP image element. Ensure the image is discoverable in the initial HTML without JavaScript dependencies.
Optimize Image Delivery and Compression
High Impact+15 points estimatedWhy It Matters:
Unoptimized images waste 704 KiB of bandwidth and delay LCP by 1.45 seconds with poor compression ratios.
How to Fix:
Implement Rails image processing with libvips or ImageMagick to serve WebP/AVIF formats. Reduce image quality to 80-85% and resize images to match display dimensions. Use Rails responsive image helpers with srcset for different screen sizes.
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Related Performance Analyses
More Ruby on Rails Speed Tests
Ruby on Rails Performance Resources
Optimize Image Delivery and Compression
Unoptimized images waste 704 KiB of bandwidth and delay LCP by 1.45 seconds with poor compression ratios.
Fix LCP Image Loading Priority
The LCP image has lazy loading applied and lacks fetchpriority=high, delaying the largest contentful paint by critical seconds.
Fix Forced Reflow Issue
45ms of forced reflow in Turbo causes layout thrashing and degrades user interaction responsiveness.
Remove Unused CSS Rules
19 KiB of unused Tailwind CSS increases load time and delays LCP by 150ms.