Eliminate Render-Blocking CSS

How to optimize credittime.kz

Next.js SiteScore: 93/100Analyzed May 2026Re-analyze this site

Eliminate Render-Blocking CSS

High Impact+15 points estimated

Why It Matters

CSS is blocking initial render and delaying First Contentful Paint by 150ms.

How to Fix

Use Next.js font optimization with next/font to inline critical CSS. Extract above-the-fold styles and inline them in the document head. Defer non-critical CSS using media='print' onload trick or dynamic imports.

0Good

What This Score Means

A score of 93 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

LCP

Largest Contentful Paint

2.6s
Needs Improvement

Good: < 2.5s

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

INP

Interaction to Next Paint

241ms
Needs Improvement

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 Next.js site performs well overall with a score of 93/100, but has one critical issue: it takes 9.2 seconds to become fully interactive, which is extremely slow for user engagement. The main culprits are render-blocking CSS that delays initial page display by 160ms and excessive unused JavaScript from tracking scripts (Facebook Pixel, Google Tag Manager, Ringostat) that waste 310KB of downloads. Additionally, the site uses outdated JavaScript polyfills that aren't needed for modern browsers, adding unnecessary 36KB. Optimizing these tracking scripts, deferring non-critical JavaScript, and modernizing the code could dramatically improve interactivity while maintaining the excellent loading performance.

Other Optimization Recommendations

Reduce JavaScript Main Thread Blocking

High Impact+12 points estimated

Why It Matters:

240ms of main thread blocking time prevents user interactions and delays Time to Interactive.

How to Fix:

Remove 310KB of unused JavaScript from analytics scripts. Use Next.js dynamic imports for heavy components that aren't immediately needed. Configure webpack to split vendor chunks and enable code splitting for analytics libraries.

Optimize Image Delivery and Sizing

Medium Impact+8 points estimated

Why It Matters:

Images lack proper dimensions causing layout shifts and are over-compressed, wasting 135KB of bandwidth.

How to Fix:

Add explicit width and height props to all Next.js Image components to prevent CLS. Use Next.js Image optimization with quality=75 for better compression. Implement proper responsive images with srcSet for different screen sizes.

Keep Your Site Fast After Optimization

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