LCP
Largest Contentful Paint
17.5s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Convert Images to Modern Formats
How to optimize southwarkleisure.co.uk
Convert Images to Modern Formats
High Impact+18 points estimated
Why It Matters
Large PNG images waste 257 KiB of bandwidth and delay LCP by 200ms, especially the 309KB woman image.
How to Fix
Install WebP Express or ShortPixel to automatically convert PNG/JPG to WebP format. Configure WordPress to serve WebP with fallbacks. Compress the cutout-insert-woman image which alone saves 234KB.
0Poor
What This Score Means
A score of 48 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
INP
Interaction to Next Paint
149ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.12
Needs Improvement
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This WordPress site has poor performance with a score of 48/100, primarily due to extremely slow loading times with Largest Contentful Paint taking 17.5 seconds. The biggest problem is render-blocking resources that delay page rendering by over 4 seconds, combined with unoptimized images that could save 257 KB in file size by converting to modern formats like WebP. Additional quick wins include minifying CSS and JavaScript files, reducing unused code, and fixing layout shift issues caused by images without proper dimensions, which together could improve the score by 30+ points and dramatically speed up the user experience.
Other Optimization Recommendations
Eliminate Render-Blocking Resources
High Impact+25 points estimatedWhy It Matters:
Render-blocking CSS and JavaScript delay initial page display by 4.25 seconds, severely impacting both FCP and LCP.
How to Fix:
Use WP Rocket or Autoptimize to defer non-critical CSS and JavaScript. Inline critical CSS for above-the-fold content. Move PopupBuilder.js and other non-essential scripts to load after page interactive using defer/async attributes.
Fix Layout Shifts and Image Dimensions
Medium Impact+8 points estimatedWhy It Matters:
Missing image dimensions cause 0.12 CLS score as content jumps during load, harming user experience.
How to Fix:
Add explicit width and height attributes to header logo and Instagram feed images. Use WordPress's responsive image features or Elementor's image sizing controls. Reserve layout space for dynamically loaded content like the main wrapper div.
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Related Performance Analyses
More WordPress Speed Tests
WordPress Performance Resources
Remove Unused CSS Rules
26KB of unused CSS (82% waste) unnecessarily delays page rendering and Speed Index.
Eliminate Forced Reflow Issues
244ms of forced reflows block the main thread and prevent fast user interactions.
Optimize Server Image Delivery
Poor LCP (5.9s) is caused by oversized images that delay your largest content paint.
Defer Non-Critical JavaScript Loading
Render-blocking Cloudflare scripts delay First Contentful Paint by 400ms unnecessarily.