LCP
Largest Contentful Paint
13.0s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Unused JavaScript Code
How to optimize perplexity.ai
Eliminate Unused JavaScript Code
High Impact+25 points estimated
Why It Matters
382 KiB of unused JavaScript delays LCP by 2.1 seconds and blocks user interactions.
How to Fix
Analyze your JavaScript bundles to identify unused code in layout-sidebar, lexical, and ask-input modules. Implement code splitting to load only necessary JavaScript for each route. Use dynamic imports for features that aren't immediately needed on page load.
0Poor
What This Score Means
A score of 42 falls in the "Poor" 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
367ms
Needs Improvement
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 serious performance problems with a score of just 42/100, indicating poor user experience. The biggest issue is an extremely slow Largest Contentful Paint of 13 seconds, caused primarily by excessive JavaScript that takes nearly 3 seconds to process and blocks the page from loading quickly. The site is loading 382 KB of unused JavaScript code and has poor caching settings that waste 385 KB of bandwidth on repeat visits. Fixing these JavaScript issues, implementing proper caching for fonts and images, and removing unused code could potentially improve the performance score by 30+ points and reduce load times by several seconds.
Other Optimization Recommendations
Optimize Resource Caching Strategy
High Impact+15 points estimatedWhy It Matters:
Poor cache lifetime wastes 385 KiB on repeat visits and delays LCP by 1.7 seconds.
How to Fix:
Increase cache-control headers for static assets like fonts (PPLX-Sans-Beta-v2-VF.woff2, FKGroteskNeue.woff2) from 5 minutes to 1 year. Set immutable cache headers for versioned assets. Implement proper cache busting for when files actually change.
Fix Render-Blocking CSS
Medium Impact+10 points estimatedWhy It Matters:
Blocking CSS delays first paint by 470ms and prevents users from seeing content quickly.
How to Fix:
Inline critical CSS for above-the-fold content directly in the HTML head. Load the remaining CSS (style-Csy45aDr.css) asynchronously using media='print' onload technique. Remove unused CSS rules (76% of the stylesheet is unused) to reduce file size from 82KB to 20KB.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Implement Efficient Caching Strategy
Short 1-hour cache lifetime for static assets wastes 3.6MB of repeat downloads for returning visitors.
Fix Layout Shifts from Images
Unsized images are causing a CLS score of 0.252, significantly hurting user experience and rankings.
Optimize Images for Modern Formats
Large unoptimized images are causing 1.9MB of wasted bandwidth and delaying LCP by 750ms.
Remove Unused JavaScript and CSS
65% of Swiper.js and 97% of CSS are unused, adding unnecessary 49 KiB to page weight.