I will improve your web app core web vitals lcp, cls, inp,bd size


About this gig
Is your app slow to load? Failing Core Web Vitals? Losing users before the first interaction?
I diagnose and fix frontend performance at the bundle, render, and network layers
with measurable Lighthouse and PageSpeed improvements you can show your team.
I target:
LCP (Largest Contentful Paint) critical resource prioritization, image optimization
CLS (Cumulative Layout Shift) skeleton screens, dimension reservations
INP (Interaction to Next Paint) long task splitting, debouncing, scheduler API
Bundle size code splitting, lazy loading, tree shaking, dead code elimination
Time to First Byte SSR/SSG opportunities, CDN configuration advice
Font loading font-display, preload hints, subsetting
Third-party script impact async loading, facades, partytown
Tools I use:
Lighthouse CI, WebPageTest, Chrome DevTools Performance tab
Webpack Bundle Analyzer / Vite Rollup Analyzer
React DevTools Profiler
Every engagement ends with a before/after report with real numbers
Respect third-party rights
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Get to know Marwen Labidi
Senior Full Stack React js Node js Three js React Native
- FromTunisia
- Member sinceMar 2024
- Avg. response time1 hour
Languages
English, Arabic, French
My Portfolio
FAQ
What scores can I expect?
Results depend on your app's current state. Most apps I've worked on gain 20–50 Lighthouse points from a full optimization pass. I'll show real numbers after the audit.
Do you work with SSR frameworks?
Yes — Next.js, Remix, Nuxt, and Astro are all in scope.
My backend is slow. Can you fix that too?
This service focuses on the frontend layer. I'll flag backend bottlenecks I spot, but the fix is out of scope unless agreed separately.
Will this affect my SEO?
Positively. Core Web Vitals are a Google ranking factor — improving them directly benefits organic search.
