LCP
Largest Contentful Paint
2.1s
Good
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Fix Forced Reflow Issue
How to optimize mistika.software
Fix Forced Reflow Issue
Medium Impact+1 point estimated
Why It Matters
45ms of forced reflow in Turbo causes layout thrashing and degrades user interaction responsiveness.
How to Fix
Update to the latest Turbo version or patch the geometric property queries in turbo.min-9fd88cd5.js. Use CSS transforms instead of DOM property reads for animations. Batch DOM reads and writes using Rails' Stimulus controllers to avoid layout recalculations.
0Good
What This Score Means
A score of 97 falls in the "Good" 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
32ms
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 Ruby on Rails site has excellent performance with a score of 97/100, but there's still room for improvement. The biggest issue is unused JavaScript from the Turbo library, which is wasting 25KB and could save 150ms on page load times. The site is also loading an oversized logo image that's 17KB larger than needed for its display size, and there's unused CSS from Tailwind that could be trimmed by 19KB. Optimizing these assets could push the site to near-perfect performance and improve the Speed Index, which currently takes 3.9 seconds to fully populate visible content.
Other Optimization Recommendations
Eliminate Unused JavaScript Code
High Impact+2 points estimatedWhy It Matters:
25 KiB of unused JavaScript delays LCP and FCP by 150ms, blocking critical page rendering.
How to Fix:
Use Rails' tree-shaking capabilities to remove unused Turbo modules. Configure Webpack to split the turbo.min bundle and only load required ActionCable components. Consider replacing full Turbo with Turbo-Stream for specific interactions only.
Remove Unused CSS Rules
High Impact+2 points estimatedWhy It Matters:
19 KiB of unused Tailwind CSS increases load time and delays LCP by 150ms.
How to Fix:
Configure Tailwind's purge settings in your Rails pipeline to remove unused classes. Update tailwind.config.js to scan only your ERB templates and components. Use Rails' CSS bundling to split critical above-the-fold styles from the rest.
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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.
Eliminate Render Blocking Resources
CSS and font files are blocking initial page render for 1.2 seconds, significantly delaying First Contentful Paint.
Fix LCP Image Loading Priority
The LCP image has lazy loading applied and lacks fetchpriority=high, delaying the largest contentful paint by critical seconds.
Remove Unused CSS Rules
19 KiB of unused Tailwind CSS increases load time and delays LCP by 150ms.