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Fiverr Pro
English
$
USD
I will optimize website, improve core web vitals and performance
Gregorio P
About this gig
Stop losing users to a slow mobile experience
If your react, preact, or JavaScript web app feels slow, your metrics are in red or your Lighthouse score is hurting your SEO, I am here to help, I will dive deep into your codebase to optimize performance from the inside out.
Why Speed Index matters?
A high Speed Index means your users are staring at a blank screen. I specialize in lowering that metric taking apps from 5+ seconds down to 2 seconds ensuring your content renders almost instantly on mobile devices.
What I Offer:
- I audit your components to eliminate unnecessary re-renders and memory leaks.
- I remove unused dependencies, dead code, and implement efficient Code Splitting.
- If your React bundle is too heavy, I can help you migrate to Preact for a massive performance boost with minimal changes.
- Image optimization (WebP/AVIF), Font loading strategies, and Critical CSS implementation.
I provide a Before vs. After report showing the real-world improvement in your metrics.
I work with custom-coded web applications and using React/Preact/Astro. (No wordpress, no Next JS).
Lets make your web app fly. Message me before ordering to discuss your tech stack!
Get to know Gregorio P
Gregorio P
Frontend developer
- FromVenezuela
- Member sinceApr 2020
- Avg. response time1 hour
Languages
English, Spanish
I specialize in building high-performance, scalable SPAs powered by React and modern JavaScript, connecting dynamic frontends to serverless backends using tools like Firebase to ensure simple data management and exceptional speed. Focusing on performance I use lightweight tools like Preact and Tailwind CSS.
My Portfolio
Other Software Development Services I Offer
FAQ
How do you keep track of all optimizations
I maintain a dedicated digital knowledge base for every project, ensuring that every change is documented and every performance bottleneck is solved.
Can you optimize any web application?
I specialize in frontend applications, specifically those built with React, Preact, or Vanilla JavaScript. If your site is built with a complex framework. I can help. Please message me first if you use a specific or niche framework.
What is the "Performance Roadmap" in the Basic package?
It is a professional technical audit. Instead of just showing you a Lighthouse score, I explain why your app is slow. I identify specific components causing re-renders, heavy dependencies that should be replaced, and bottlenecks application.
Will my website's design change during optimization?
Not at all. My job is to make the existing design load and feel faster. I focus on how the browser handles your code and assets. If a change is needed for performance (like adjusting a heavy animation), I will always discuss it with you first.
Do you provide a "Before vs. After" comparison?
Yes. Every Basic, Standard and Premium project includes a final report with clear evidence of the improvements.
