Optimize JavaScript Execution and Bundles

How to optimize spanienbostader.se

WordPress SiteScore: 44/100Analyzed March 2026Re-analyze this site

Optimize JavaScript Execution and Bundles

High Impact+25 points estimated

Why It Matters

JavaScript execution takes 2.1 seconds and blocks the main thread, causing 730ms Total Blocking Time that prevents user interactions.

How to Fix

Remove or replace the RevSlider plugin which consumes 1.3 seconds of execution time. Use WP Rocket to defer non-critical JavaScript like Google Analytics. Audit and remove unused JavaScript - 302 KiB can be eliminated from vendor scripts and webgl.js.

0Poor

What This Score Means

A score of 44 falls in the "Poor" 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

6.4s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

316ms
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 WordPress site has severe performance issues with a score of only 44/100. The biggest problem is excessive JavaScript execution taking over 6 seconds of main-thread work, particularly from Revolution Slider plugins that are causing 730ms of blocking time and delaying user interactions until 43.6 seconds. The site is also loading nearly 14MB of unoptimized images and has 106KB of unused CSS that could be removed. Removing or optimizing the heavy JavaScript plugins, compressing images to modern formats like WebP, and cleaning up unused code could easily improve the score by 30+ points and make the site usable for visitors.

Other Optimization Recommendations

Implement Modern Image Optimization

High Impact+18 points estimated

Why It Matters:

Images waste 9.5 MB in unnecessary data transfer and cause poor LCP performance with 2+ second resource load delays.

How to Fix:

Install ShortPixel or Imagify to convert images to WebP/AVIF format for 30% size reduction. Generate responsive image sizes to serve 616x462 instead of 1440x1080 originals. Add fetchpriority='high' to the mobile logo LCP element and ensure it's discoverable in initial HTML.

Eliminate Render-Blocking Resources

High Impact+15 points estimated

Why It Matters:

Critical CSS and JavaScript files block First Contentful Paint by 520ms and delay LCP significantly.

How to Fix:

Use a WordPress optimization plugin like WP Rocket to inline critical CSS and defer non-essential stylesheets. Remove 106 KiB of unused CSS from all-css.css and Font Awesome. Defer jQuery UI and custom.min.js loading until after page render using async or defer attributes.

Keep Your Site Fast After Optimization

Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.

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