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

M
marwenlabidi
M
marwenlabidi
Marwen Labidi

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

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
5+ years in React, Node.js, TypeScript · Full-stack architecture · Micro-frontends · React Native mobile · Three.js & React Three Fiber 3D experiences · Performance & security audits. Web · Mobile · 3D · Performance · Security Freelance, B2B & contract — DM or email to get started.

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