LCP
Largest Contentful Paint
4.3s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize Image Compression and Sizing
How to optimize sciencereader.com
Generic SiteScore: 80/100Analyzed February 2026
Optimize Image Compression and Sizing
High Impact+15 points estimated
Why It Matters
Images are oversized for their display dimensions and poorly compressed, delaying LCP by 1 second and wasting 314 KiB.
How to Fix
Install ShortPixel or Imagify WordPress plugin to automatically compress WebP images by 50-70%. Generate responsive image sizes (125x70px) for thumbnail display instead of serving 768x430px images. Update your theme's image size settings in WordPress admin.
0Needs Improvement
What This Score Means
A score of 80 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
117ms
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 website has decent performance with a score of 80/100, but there are significant opportunities for improvement. The biggest issue is render-blocking resources (CSS files and jQuery) that are delaying the First Contentful Paint by 750ms, preventing users from seeing content quickly. Additionally, images are poorly optimized and oversized, wasting 314KB of bandwidth and slowing down the page's largest content element by 1 second. Fixing these render-blocking resources and compressing/resizing images appropriately could boost the performance score substantially and improve user experience, especially since the page currently takes over 4 seconds to fully load its main content.
Other Optimization Recommendations
Eliminate Render Blocking Resources
High Impact+12 points estimatedWhy It Matters:
jQuery and CSS files are blocking initial page render, delaying First Contentful Paint by 750ms.
How to Fix:
Use WP Rocket or Perfmatters to defer jQuery loading since it's not needed for above-the-fold content. Inline critical CSS for fonts (PlayfairDisplay, Roboto) directly in HTML head. Move non-critical stylesheets to load asynchronously using media='print' onload trick.
Extend Browser Cache Lifetimes
Medium Impact+8 points estimatedWhy It Matters:
Short cache durations force unnecessary re-downloads on repeat visits, impacting LCP by 300ms.
How to Fix:
Add cache headers via .htaccess or WP Rocket to set 1-year expiry for static assets (CSS, JS, fonts, images). Configure Google Analytics script caching for 7 days minimum. Update server configuration to include proper ETags for cache validation.
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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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