Performance diagnosis
Review the production route, Core Web Vitals signals, rendering boundaries, network waterfall, bundles, and third-party dependencies.
All services
Performance audits · Core Web Vitals · Production fixes
Next.js Performance Optimization Expert
I help startups and growing businesses diagnose slow Next.js applications and turn the findings into production-ready fixes. The work covers loading performance, rendering, images, fonts, data fetching, third-party scripts, and interaction responsiveness—without trading maintainability for a temporary Lighthouse score.
Problems this engagement is built to solve
The scope starts from the product problem—not a prepackaged list of technologies.
- Largest Contentful Paint is slow on real mobile connections
- Hydration warnings or client/server rendering mismatches
- Large JavaScript bundles delay interaction
- Images, fonts, or third-party scripts block the first view
- Data fetching causes waterfalls, duplicate requests, or layout shifts
- A good desktop score hides a poor mobile experience
What you should leave with
- A prioritized audit tied to user-visible problems
- Cleaner server and client component boundaries
- Faster image, font, script, and data-loading paths
- Reduced layout shift and more responsive interactions
- A maintainable performance baseline your team can preserve
What the work includes
A focused engagement covers the decisions, implementation, and handoff needed to solve the problem cleanly.
Next.js implementation
Apply targeted fixes using App Router conventions, next/image, next/font, caching, dynamic loading, and server-first rendering where appropriate.
Mobile-path optimization
Test the pages that matter on constrained connections and prioritize the content needed to understand and use the product.
Verification and handoff
Recheck affected routes, document material changes, and leave clear guidance for preventing the same regressions.
A clear path from diagnosis to delivery
You see what is being changed, why it matters, and how the result is verified.
- 01
Measure
Start with the live experience and identify which metrics and routes are actually hurting users.
- 02
Prioritize
Separate high-impact rendering and loading problems from cosmetic score-chasing.
- 03
Implement
Ship focused changes in reviewable steps, preserving behavior and accessibility.
- 04
Validate
Compare before and after behavior across responsive routes and document the new baseline.
Relevant work
Real products that demonstrate the technical and market context behind this service.
Tickets-Ghana
A mobile-first ticketing and voting platform with payment, QR delivery, real-time leaderboards, and organizer operations in one Next.js product.
Build and Coat Limited
A product-heavy e-commerce experience structured for discovery, nationwide ordering, training reservations, and search visibility.
Frequently asked questions
Practical answers before we define the project scope.
- What does a Next.js performance optimization engagement include?
- It normally includes a production audit, route and rendering review, Core Web Vitals diagnosis, image and font checks, JavaScript and third-party script analysis, targeted implementation, and verification. The exact scope depends on whether the problem is isolated to one route or affects the whole application.
- Can you fix a slow Next.js site without rebuilding it?
- Often, yes. Many performance problems come from a small number of issues such as oversized assets, unnecessary client components, request waterfalls, blocking scripts, or unstable layouts. I audit first so the recommendation is based on evidence rather than assuming a rebuild.
- Do you work with both App Router and existing Next.js projects?
- Yes. I work primarily with modern Next.js and the App Router, and I can assess older projects to determine whether targeted fixes or an incremental migration is the safer path.
- Can you collaborate with an existing developer or agency?
- Yes. I can work as a focused performance specialist inside an existing delivery team, provide reviewable changes, and document the decisions for handoff.
Bring me the problem—not a finished technical brief.
Share the product, the current constraint, and what a better outcome looks like. I'll help define the right scope.