Remove Unused CSS and JavaScript

How to optimize aswebsites.co.uk

WordPress SiteScore: 74/100Analyzed March 2026Re-analyze this site

Remove Unused CSS and JavaScript

High Impact+15 points estimated

Why It Matters

96% of your CSS (80KB) and 72% of JavaScript (94KB) is unused, wasting 544ms of load time.

How to Fix

Use Asset CleanUp or Perfmatters plugin to remove unused nicepage plugin resources on pages that don't need them. Audit your WordPress theme and consider switching to a lighter alternative. Enable tree-shaking in your build process if using custom JavaScript.

0Needs Improvement

What This Score Means

A score of 74 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

5.2s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

75ms
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 WordPress site has moderate performance issues with a score of 74/100. The biggest problem is render-blocking JavaScript and CSS files that are delaying the page from displaying content, particularly a large 134KB nicepage.js file that's blocking rendering for 2.35 seconds and wasting 450ms of load time with unused code. The site also suffers from slow image loading and poor caching, with images taking over 5 seconds to fully appear (Largest Contentful Paint). Optimizing or deferring the nicepage plugin files, compressing images to modern formats like WebP, and implementing better caching could improve the performance score by 15-20 points and significantly enhance user experience.

Other Optimization Recommendations

Eliminate Render-Blocking JavaScript and CSS

High Impact+25 points estimated

Why It Matters:

Render-blocking resources delay First Contentful Paint by 2.35 seconds, severely impacting user experience.

How to Fix:

Defer the large nicepage.js file (134KB) using async or defer attributes. Inline critical CSS for above-the-fold content. Use WordPress plugins like WP Rocket or Autoptimize to automatically defer non-critical resources.

Optimize Images for Modern Formats

High Impact+18 points estimated

Why It Matters:

Large PNG images are delaying LCP by 950ms and consuming 320KB of unnecessary bandwidth.

How to Fix:

Convert the hero background image to WebP format to save 193KB. Use responsive image sizes for the logo image (currently oversized by 64KB). Install a WordPress plugin like ShortPixel or EWWW Image Optimizer to automatically convert and compress images.

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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