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I will fix your core web vitals and page speed as a developer
Sherzod F
About this gig
Your site scores 40 on mobile and you have been told to "optimise images". That is not the problem, and compressing images will not fix it.
I work with Next.js, React, custom and static HTML sites. What I actually do:
- Find what causes your LCP: usually an unoptimised hero image, a font that blocks render, or a third-party script loaded first
- Fix CLS at the source: reserved space for images and embeds, no more jumping layout
- Cut INP: heavy hydration, oversized bundles, event handlers doing too much
- Serve images properly: correct formats, sizes, priority, lazy loading where it belongs
- Audit third-party scripts: analytics, chat widgets and pixels are usually the single biggest cost
You get before/after numbers from field data, not just a lab score that looks good on your laptop.
What I don't do: WordPress plugin tweaking, caching plugins, or anything that only moves the lab score.
I work in writing via chat, no calls. Send me your URL before ordering and I'll tell you what is realistic for your site.
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 Sherzod F
Sherzod F
Next js Developer and Technical SEO
- FromGeorgia
- Member sinceJul 2025
- Avg. response time1 hour
Languages
English, Russian
I'm Sher — full-stack developer specialising in Next.js and technical SEO.
I build fast, search-ready sites and fix what stops existing ones from ranking: indexation, structured data, hreflang, Core Web Vitals.
Recent: a rental site went from average position 17.8 to 8.3 and 14 → 532 organic clicks per two weeks, ~2.5 months after launch. A bilingual site went from 0 to 37 keywords in Yandex top 3.
Stack: Next.js, React, TypeScript, Node.js, PostgreSQL.
I work in writing via chat, no calls. Reply within a few hours on weekdays.
My Portfolio
FAQ
My PageSpeed score is 95 on desktop but 40 on mobile. Why?
Mobile is tested on a throttled connection and a slower CPU. That gap is normal, and mobile is what Google actually uses for ranking. I optimise for mobile field data.
Do you work with WordPress?
I can diagnose any site and tell you exactly what is slow. But I only implement on Next.js, React, custom and static HTML. For WordPress you get the findings, not the fix.
Will this improve my rankings?
Speed is one ranking factor among many. It reliably improves how many visitors stay, and it removes a technical handicap. It does not create demand that isn't there.
Can you guarantee a score of 90+?
No. Some sites carry third-party scripts that make 90 impossible without removing them. I will tell you what is achievable before you order, not after.
Do you do calls?
I work in writing through Fiverr chat. It keeps everything documented and works across time zones.
