Optimize Main Thread Processing

How to optimize skidoso.ru

Generic SiteScore: 86/100Analyzed May 2026Re-analyze this site

Optimize Main Thread Processing

Medium Impact+4 points estimated

Why It Matters

2.2 seconds of main thread work blocks user interactions and degrades perceived performance.

How to Fix

Break up long-running JavaScript tasks into smaller chunks using setTimeout or requestIdleCallback. Optimize rendering performance by reducing DOM manipulation frequency. Defer heavy computations for product search and taxonomy processing until after initial page load.

0Needs Improvement

What This Score Means

A score of 86 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

LCP

Largest Contentful Paint

1.7s
Good

Good: < 2.5s

Measures how long it takes for the main content to appear on screen

INP

Interaction to Next Paint

43ms
Good

Good: < 200ms

Measures how quickly the page responds to user interactions

CLS

Cumulative Layout Shift

0.25
Needs Improvement

Good: < 0.1

Measures visual stability - how much content shifts during page load

AI Performance Analysis

This website has good performance with a score of 86/100, but suffers from significant layout stability issues that hurt user experience. The biggest problem is Cumulative Layout Shift (CLS) with a poor score of 0.249, caused by content sections and the footer moving around unexpectedly as the page loads. The site also has opportunities to improve loading speed by removing 21 KB of unused JavaScript and CSS code, which could save about 430 milliseconds in load time. Fixing these layout shifts and cleaning up unused code would substantially improve both the performance score and overall user experience.

Other Optimization Recommendations

Fix Layout Shifts in Content Sections

High Impact+8 points estimated

Why It Matters:

Layout shifts with score 0.249 severely hurt user experience and CLS metric, causing content to jump unexpectedly.

How to Fix:

Reserve space for the home-hub-panel sections by setting min-height in CSS before content loads. Add skeleton loading states for the 'Все скидки' and footer sections. Ensure API-dependent content has placeholder dimensions to prevent layout jumps during data fetching.

Reduce Unused JavaScript and CSS

High Impact+6 points estimated

Why It Matters:

21KB of unused JavaScript and 21KB of unused CSS delay initial page rendering by 430ms combined.

How to Fix:

Implement code splitting to load only necessary React components initially. Remove unused CSS rules from index-BhfncJjZ.css (87% unused). Use dynamic imports for non-critical features and defer loading product search functionality until user interaction.

Keep Your Site Fast After Optimization

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