LCP
Largest Contentful Paint
8.7s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Reduce Unused JavaScript Bundles
How to optimize 9000.firebase.studio.1773862038601.cluster.fbfjltn375c6wqxlhoehbz44sk.cloudworkstations.dev
Reduce Unused JavaScript Bundles
High Impact+25 points estimated
Why It Matters
617 KiB of unused JavaScript is blocking main thread execution for 4.2 seconds and delaying LCP by 2.25 seconds.
How to Fix
Implement Next.js dynamic imports for Firebase Firestore and development tools that aren't needed on initial load. Use `next/dynamic` with `ssr: false` for client-only components. Enable tree-shaking by updating your webpack config to exclude unused Firebase modules and consider using Firebase v9 modular SDK.
0Poor
What This Score Means
A score of 44 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
568ms
Poor
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 Next.js site has poor performance with a score of 44/100, primarily due to excessive JavaScript processing that's blocking user interactions. The biggest problem is that your JavaScript takes over 4 seconds to execute and compile, creating a massive 1,410ms Total Blocking Time that prevents users from interacting with the page until 12+ seconds after loading. Your site is loading 617KB of unused JavaScript code that could be removed or deferred, and many files aren't minified, wasting an additional 549KB of bandwidth. Reducing your JavaScript bundle size, enabling code splitting, and minifying your assets could dramatically improve your Core Web Vitals and cut your loading time in half.
Other Optimization Recommendations
Eliminate Render-Blocking CSS Resources
High Impact+18 points estimatedWhy It Matters:
CSS files are blocking initial page render for 1.77 seconds, directly delaying both FCP and LCP.
How to Fix:
Inline critical CSS for above-the-fold content using Next.js styled-jsx or CSS-in-JS solutions. Move Google Fonts loading to use `next/font` with `display: 'swap'` and preload strategy. Defer non-critical CSS using media queries or dynamic imports in your Next.js app.
Optimize JavaScript Bundle Minification
Medium Impact+12 points estimatedWhy It Matters:
549 KiB of unminified JavaScript is causing excessive parsing time and blocking user interactions.
How to Fix:
Verify Next.js production build is properly minified by running `next build` instead of development mode. Update your build configuration to enable SWC minification. Remove console.log statements and development-only code using webpack DefinePlugin or environment-based conditionals.
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Reduce Unused JavaScript Bundle Size
616 KiB of unused JavaScript wastes network bandwidth and delays page interactivity.
Remove Legacy JavaScript Polyfills
75 KiB of unnecessary polyfills for modern browsers slow LCP by 400ms.
Eliminate Multiple Page Redirects
Multiple redirects add 780ms delay before page content even begins loading.
Optimize JavaScript Bundle Minification
549 KiB of unminified JavaScript is causing excessive parsing time and blocking user interactions.