LCP
Largest Contentful Paint
3.8s
Needs Improvement
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize Network Request Chain
How to optimize shutoffware.com
Optimize Network Request Chain
Medium Impact+4 points estimated
Why It Matters
Your critical resource chain spans 4 levels deep, creating unnecessary delays in content rendering.
How to Fix
Preload critical JavaScript files using <link rel='preload'> tags. Move essential API calls like Firebase requests to occur earlier in the page lifecycle. Consider inlining critical JavaScript or using server-side rendering to reduce dependency chains.
0Needs Improvement
What This Score Means
A score of 85 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
20ms
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 good performance with a score of 85/100, but there are still meaningful improvements to be made. The biggest issue is excessive unused JavaScript (63 KiB of waste) that's slowing down the Largest Contentful Paint to 3.8 seconds, which is too slow for optimal user experience. The site is also loading 95% unused CSS (14 KiB), indicating poor code optimization. Removing unused code from both JavaScript and CSS files could save over 700 milliseconds in loading time and significantly improve the user experience, especially on mobile devices.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+8 points estimatedWhy It Matters:
52% of your main JavaScript bundle is unused, wasting 64KB and delaying LCP by 450ms.
How to Fix:
Analyze your JavaScript bundle with webpack-bundle-analyzer to identify unused modules. Implement code splitting to load only required components per page. Use dynamic imports for features that aren't immediately needed on page load.
Eliminate Unused CSS Rules
High Impact+6 points estimatedWhy It Matters:
95% of your CSS file is unused, adding 14KB of unnecessary download time and 300ms LCP delay.
How to Fix:
Use PurgeCSS or UnCSS to remove unused styles from your production build. Implement critical CSS extraction to inline above-the-fold styles. Consider CSS-in-JS solutions for component-specific styling to reduce bundle size.
Keep Your Site Fast After Optimization
Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Purge Unused CSS Rules
95% of your CSS file is unused, wasting 14KB of network bandwidth and blocking rendering.
Optimize Critical Request Chain
Your longest network chain takes 320ms through 4 levels of dependencies, delaying page rendering.
Reduce Network Chain Dependencies
Long dependency chains create waterfall loading that extends total page load time to over 20 seconds.
Optimize CSS Bundle Size
95% of your CSS (14 KiB) is unused, adding 300ms to LCP and wasting bandwidth.