LCP
Largest Contentful Paint
8.6s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize Image Delivery System
How to optimize sciencereader.com
Generic SiteScore: 66/100Analyzed February 2026
Optimize Image Delivery System
High Impact+16 points estimated
Why It Matters
Oversized images waste 314 KiB and delay LCP by 1.25 seconds with poor compression.
How to Fix
Generate responsive image sizes for your 200x112 thumbnails instead of serving 768x430 images. Increase WebP compression settings to reduce file sizes by 60-70%. Configure WordPress to serve appropriately sized images using srcset attributes. Install ShortPixel or Imagify for automatic optimization.
0Needs Improvement
What This Score Means
A score of 66 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
INP
Interaction to Next Paint
119ms
Good
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 science website has poor performance with a score of 66/100, indicating significant room for improvement. The biggest problem is extremely slow loading times, with the Largest Contentful Paint taking a concerning 8.6 seconds and Time to Interactive reaching 8.7 seconds. The site is being held back by render-blocking JavaScript (especially jQuery), oversized images that aren't properly optimized for their display dimensions, and 228 KB of unused JavaScript code from Google Analytics and other plugins. Addressing these issues by optimizing images, removing unused code, and implementing proper caching could potentially save over 3 seconds in loading time and dramatically improve user experience.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+18 points estimatedWhy It Matters:
228 KiB of unused JavaScript is delaying LCP by 1.05 seconds and blocking user interactions.
How to Fix:
Remove or defer unused Google Analytics code (103 KiB unused). Conditionally load Swiper.js only on pages with sliders. Use WordPress Asset CleanUp plugin to disable scripts on pages that don't need them. Consider switching to Google Tag Manager for more efficient tracking.
Eliminate Render Blocking Resources
High Impact+14 points estimatedWhy It Matters:
Critical CSS and JavaScript files are blocking first paint by 900ms, delaying user experience.
How to Fix:
Inline critical CSS for above-the-fold content directly in the HTML head. Defer jQuery and non-essential JavaScript using async or defer attributes. Use WordPress plugins like WP Rocket to automatically defer render-blocking resources. Move Elementor CSS to load asynchronously after first paint.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Remove Unused JavaScript Code
Google Tag Manager scripts contain 139KB of unused code, slowing LCP by 600ms and wasting processing time.
Optimize Video File Caching
17MB of video content has zero cache lifetime, forcing full re-downloads on every visit and wasting 69MB of bandwidth.
Defer Render-Blocking JavaScript
JavaScript files are blocking initial page render, delaying FCP by 750ms and preventing users from seeing content.
Remove Unused CSS and JavaScript
136KB of unused JavaScript and 63KB of unused CSS waste bandwidth and slow down page parsing.
Frequently Asked Questions
Keep Your Site Fast After Optimization
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