LCP
Largest Contentful Paint
1.7s
Good
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Remove Unused CSS Rules
How to optimize britainexpress.com
Remove Unused CSS Rules
Medium Impact+4 points estimated
Why It Matters
CSS stylesheet contains 92% unused code, wasting 18 KiB and delaying LCP by 100ms.
How to Fix
Audit custom1-nogallery.css to remove unused Bootstrap and custom styles. Split critical above-the-fold CSS into inline styles. Defer non-critical CSS loading using media='print' onload='this.media="all"' technique.
0Good
What This Score Means
A score of 99 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
INP
Interaction to Next Paint
108ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.01
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This site performs exceptionally well with a stellar performance score of 99/100, indicating excellent user experience. The biggest opportunity for improvement is reducing unused JavaScript, particularly from Google Tag Manager and Google Custom Search, which could save 167 KB and improve loading times by 150ms. The site would also benefit from optimizing images by converting them to modern formats like WebP and properly sizing them, which could save an additional 133 KB in downloads. While the performance is already excellent, these optimizations would make the site even faster and more efficient for users.
Other Optimization Recommendations
Reduce Unused JavaScript Code
High Impact+8 points estimatedWhy It Matters:
Unused JavaScript consumes 167 KiB and delays LCP by 150ms, slowing page interactivity.
How to Fix:
Remove or defer Google Tag Manager and Google Custom Search scripts that aren't immediately needed. Use async loading for analytics scripts. Consider self-hosting Google Fonts CSS to reduce third-party dependencies and improve load times.
Optimize Image Delivery Format
High Impact+6 points estimatedWhy It Matters:
Images waste 133 KiB using outdated formats and oversized dimensions that slow visual loading.
How to Fix:
Convert banner and thumbnail images to WebP or AVIF format for 30-50% smaller file sizes. Resize the main banner from 2200x220 to match its 669x70 display size. Add fetchpriority='high' to the LCP image (Whittington Castle) for faster discovery.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Fix Layout Shifts from Images
Unsized images cause 0.13 CLS score with layout shifts primarily from the logo and hero image lacking explicit dimensions.
Remove Unused JavaScript Resources
732 KiB of unused JavaScript delays LCP by 3.6 seconds, with block-editor and components scripts being 80%+ unused.
Optimize Image Delivery and Size
The 1.4MB hero image causes 5.1 second resource load delay and significantly impacts LCP by appearing oversized at 6000x4000 for 570x380 display.
Reduce Render-Blocking Resources
CSS and JavaScript files are blocking initial page render for 3,090ms, significantly delaying First Contentful Paint.