LCP
Largest Contentful Paint
2.1s
Good
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize Mary Poppins Image
How to optimize johnhenry.ie
Generic SiteScore: 98/100Analyzed January 2026
Optimize Mary Poppins Image
Medium Impact+1 point estimated
Why It Matters
The featured image wastes 170KB through inefficient format and oversized dimensions.
How to Fix
Convert the PNG to WebP format to reduce size by ~149KB. Resize the source image from 365x484 to match display size of 192x255. Implement responsive images with srcset to serve appropriate sizes for different screen densities and viewports.
0Good
What This Score Means
A score of 98 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
42ms
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 website achieves an excellent performance score of 98/100, indicating very fast loading times for users. The biggest opportunity for improvement is optimizing image delivery, particularly a "Mary Poppins" image that could save 167 KB by converting to modern formats like WebP and properly sizing it for display (currently 365x484 pixels but shown at 192x255). Additionally, render-blocking CSS is delaying the initial page display by an estimated 590 milliseconds, which could be improved by inlining critical styles or deferring non-essential CSS. Despite these minor optimizations, the site is already performing exceptionally well and any improvements would provide only marginal gains.
Other Optimization Recommendations
Eliminate Render Blocking CSS
High Impact+2 points estimatedWhy It Matters:
The CSS file blocks initial page render and delays both LCP and FCP by 600ms.
How to Fix:
Inline critical CSS directly in the HTML head for above-the-fold content. Load non-critical CSS asynchronously using media='print' onload='this.media="all"' or defer it with JavaScript. Consider splitting your CSS bundle to separate critical and non-critical styles.
Optimize Font Loading Chain
Medium Impact+1 point estimatedWhy It Matters:
The Open Sans font creates a 3-level network dependency chain that extends critical path timing.
How to Fix:
Add <link rel='preload' href='open-sans-latin-wght-normal-CWNzRldh.woff2' as='font' type='font/woff2' crossorigin> to the HTML head. Consider self-hosting the font or using font-display: swap to improve perceived performance during font load.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Optimize Font Loading Chain
The Open Sans font creates a 3-level network dependency chain that extends critical path timing.
Eliminate Render Blocking CSS
The CSS file blocks initial page render and delays both LCP and FCP by 600ms.
Eliminate Render Blocking CSS Resources
Three CSS files block initial render for 1.32 seconds, delaying First Contentful Paint.
Optimize LCP Image Resource Loading
Your LCP image has 2.2 second resource load delay and is 59 KiB larger than needed.
Frequently Asked Questions
Keep Your Site Fast After Optimization
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