LCP
Largest Contentful Paint
7.3s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Implement Long-Term Caching Strategy
How to optimize radiation.monitor.com
Generic SiteScore: 63/100Analyzed February 2026
Implement Long-Term Caching Strategy
High Impact+20 points estimated
Why It Matters
Poor caching wastes 516 KiB on repeat visits and delays LCP by 2.4 seconds unnecessarily.
How to Fix
Configure CDN cache headers for jsdelivr.net resources to cache for at least 1 year instead of 10 minutes. Add Cache-Control headers with max-age=31536000 for static assets. Implement versioning strategy to handle cache busting when files change.
0Needs Improvement
What This Score Means
A score of 63 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
173ms
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 poor performance with a score of 63/100, indicating significant issues that hurt user experience. The biggest problem is extremely slow content loading - it takes 7.3 seconds for the largest element to appear and 4.6 seconds for any content to show up, which is far beyond Google's recommended limits. The main culprits are 292 KiB of unused JavaScript code (especially from Google Analytics and portal widgets) that's blocking the page from loading quickly, plus inefficient caching that forces users to re-download the same files repeatedly. Removing or deferring unused scripts and implementing proper long-term caching could dramatically improve load times and boost the performance score by 30+ points.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+25 points estimatedWhy It Matters:
Unused JavaScript wastes 292 KiB and delays LCP by 1.2 seconds while blocking critical rendering.
How to Fix:
Audit Google Tag Manager setup and remove unused tracking scripts. Defer non-essential portal.min.js components using async/defer attributes. Split JavaScript bundles to load only required components on initial page load. Consider replacing heavy third-party scripts with lightweight alternatives.
Eliminate Render Blocking CSS
Medium Impact+12 points estimatedWhy It Matters:
Render-blocking CSS delays initial page rendering and prevents users from seeing content quickly.
How to Fix:
Inline critical CSS styles directly in the HTML head section for above-the-fold content. Load cards.min.css asynchronously using media='print' onload='this.media="all"' technique. Split CSS into critical and non-critical parts to prioritize essential styling.
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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
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