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I will optimize nextjs react performance and core web vitals speed
Hadzi
About this gig
Is your Next.js or React site slow, heavy, or scoring low on Lighthouse?
I will optimize your existing Next.js/React project to improve loading speed and Core Web Vitals (LCP, CLS, INP). Youll get practical fixes, clean code changes, and a short report of what was improved.
What I can optimize:
Lighthouse performance issues and slow page load
Image optimization (Next/Image, sizing, lazy loading)
Reduce unnecessary JS/CSS (minification, cleanup)
Code splitting and dynamic imports
Basic caching and performance best practices (when applicable)
What you will receive:
Implemented speed improvements in your codebase
Before/after checks when possible
Short handover note explaining key changes
Important:
I do not guarantee a specific Lighthouse score (results depend on codebase, hosting, and third-party scripts)
This Gig is for optimizing an existing site/app (not building a full website from scratch)
If youre unsure which package fits, message me with your URL and Ill confirm scope before you order
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Hadzi
Hadzi
- FromIndonesia
- Member sinceJun 2024
- Avg. response time1 hour
Languages
Indonesian, Javanese, English
Are you a startup looking for a front end developer to complete a functional Reactjs App with HTML CSS, Bootstrap, and more?
Let's get your job done in high quality!
I'm a front end web developer with 5+ years of extensive experience developing mid- to large-scale websites and web applications using HTML, CSS, Bootstrap ,Tailwinds, React JS. I will convert any design to a web application as per your requirement, which will be completely mobile-friendly and functional.
I always maintain a long-term relationship with my clients. I can take over the project if you want to build a web
My Portfolio
Other Website Maintenance Services I Offer
FAQ
What do you need from me to start?
Your live URL (or staging link), repo/zip access, and which page feels slow (home/product/blog). A screenshot of Lighthouse is helpful.
Do you guarantee a Lighthouse score (e.g., 90+)?
No fixed guarantee. I apply best-practice optimizations to improve performance based on your current setup and constraints.
Can you optimize for mobile performance too?
Yes. Mobile performance and Core Web Vitals are part of the optimization focus.
ls this for Next.js App Router or Pages Router?
Both are supported. If you’re not sure, I’ll check once I access the project.
Can you deploy the changes to Vercel/Netlify?
Yes, if you provide access or a preferred deployment method. Otherwise I can deliver via PR or zip.
