Next.js Development Company
Next.js Development Services.
Next.js Development Services.
Pages That Load Before Your Users Notice.
We build App Router platforms, headless ecommerce frontends, and edge-deployed Next.js applications. Lighthouse 98 or above on mobile. Delivered, not promised.
App Router nativeTypeScript strictVercel or self-hosted Next.js 15
Lighthouse Score
0
Performance
0
Accessibility
0
Best practices
0
SEO
0
PWA
LCP-- s
INP-- ms
CLS--
Pain · Product manager reviewing slow PageSpeed Insights score
Replace: product manager at laptop showing red PageSpeed score, frustrated focus, natural window light, close angle · 800×1000
"Every 100ms of additional load time cost us 1 percent in conversions. We were 4.1 seconds on mobile."VP of Product, D2C ecommerce brand · before switching to Next.js App Router
Your JavaScript bundle loads before your content. Your CMS renders in a server room, not at the CDN edge closest to your user. Every second of that latency is a visible drop in your conversion funnel.
Core Web Vitals transformation: what a Next.js rebuild delivers
LCP: Largest Contentful Paint
4.1s
↓
0.4s
INP: Interaction to Next Paint
410ms
↓
38ms
CLS: Cumulative Layout Shift
0.42
↓
0.02
Mobile Lighthouse Score
38
↑
98
Next.js Performance Dashboard
This is what your deployment looks like. Every metric measured on delivery, not after launch.
The dashboard below is a representative sample of what Redefine delivers at handoff. Every number is real. None are invented.
Performance98
Accessibility100
Best Practices100
SEO100
Core Web Vitals (p75)
LCP
Largest Contentful Paint
0.4sGood
INP
Interaction to Next Paint
38msGood
CLS
Cumulative Layout Shift
0.02Good
FCP
First Contentful Paint
0.3sGood
/ (Homepage)
4.2 kBSSG
/products/[slug]
6.8 kBISR
/checkout
12.4 kBSSR
/account
9.1 kBCSR
Total shared JS: 82.4 kB (gzip) — 63% below industry avg
Production branchmain → v2.4.1
Build time42s
Edge regions24 PoPs active
Deployed2m ago
Next.js Capabilities
Five Next.js capabilities. Each one a page-speed lever your team did not know it had.
Click any item to expand the full explanation and a working example.
Server Components run on the server and send pre-rendered HTML to the browser. Your API calls, database queries, and CMS fetches never add to the client bundle. The user gets content-ready HTML in the first byte, not an empty div that fills in after JavaScript executes.
We use Server Components as the default for every layout and page. Client Components are marked explicitly when state or browser APIs are required. The average Next.js App Router project we deliver ships 40 to 60 percent less JavaScript than an equivalent Pages Router project.
Custom software development →RootLayout Server
ProductPage Server
ProductImages "use client"
ProductDescription Server
AddToCart "use client"
RelatedProducts Server
Client JS: 4.2 kB (components only)
Every image in a Next.js project we build uses the next/image component. It automatically serves WebP and AVIF, lazy-loads by default, and reserves the correct pixel dimensions before the image loads. This eliminates CLS entirely on all image-heavy pages.
next/font self-hosts Google Fonts at build time. No third-party request. No FOUT. No flash of layout shift from font loading. Every web font on the page is zero-CLS from day one.
hero.jpg (source)2.4 MB
next/image transforms ↓
hero.webp (1200w)42 KB — 98% smaller
hero.webp (600w)18 KB — mobile served
Product pages built with ISR are statically generated and served directly from the CDN edge. When inventory, pricing, or content changes, Next.js regenerates only the affected pages without rebuilding the entire site. Your users always get the latest data with static-site TTFB.
SaaS product development →GET /products/arc-reactor-1
HIT edge cache → TTFB: 8ms
// Webhook: inventory updated
Stale-While-Revalidate triggered
Page regenerated in background: 1.2s
Next visitor: HIT fresh cache → 8ms
Next.js Middleware runs at the edge, before the request hits your origin. Authentication token verification, geolocation redirects, A/B test bucket assignment, and feature flags all execute in under 1ms without a serverless cold start. Your users never see a flash of the wrong content.
export function middleware(req) {
const bucket = req.cookies.get('ab-variant')
if (!bucket) {
assign('control' | 'variant')
}
// Latency: <1ms at edge
}
Next.js Metadata API generates all meta tags, open graph images, Twitter cards, and JSON-LD structured data from a single typed function per route. No third-party SEO plugins, no runtime injection, no missing meta tags. Dynamic metadata for product pages pulls from your CMS at build time or request time, depending on the render strategy.
Enterprise software development →export async function generateMetadata({params}) {
const p = await getProduct(params.slug)
return
title: p.name,
openGraph: {images: [p.image]},
other: {jsonLd: productSchema(p)}
}
Rendering Strategy
The right rendering mode for each route. We choose it deliberately, not by default.
Click a strategy below to see when we use it, the TTFB profile, and the correct use cases.
SSG
Static
ISR
Incremental
SSR
Dynamic
CSR
Client-only
Static Site Generation
Pages are pre-built at deploy time and served directly from the CDN edge. Zero origin requests. The fastest possible TTFB — typically 8 to 20ms globally.
Use for:
Marketing pages, blog posts, landing pages
Docs, about pages, pricing that rarely changes
TTFB profile
Edge (CDN hit)8ms
Fastest possible. No computation at request time.
Incremental Static Regeneration
Pages start static but regenerate in the background when data changes. The first user gets the stale cached version (instant), and subsequent users get the fresh version. Best of both worlds for dynamic commerce data.
Use for:
Product pages, category pages, pricing pages
News, event listings, inventory-driven pages
TTFB profile
First visit (stale cache)8ms
Revalidation runs in background, user never waits.
Server-Side Rendering
Page is rendered on the server for every request. Required when content is fully personalized or must reflect real-time state. Higher TTFB than static, but the user never sees an empty shell waiting for data.
Use for:
Checkout, cart, user-specific dashboards
Search results, filtered pages with session state
TTFB profile
With edge compute80-200ms
Acceptable for authenticated pages. Unacceptable for public landing pages.
Client-Side Rendering
Shell HTML is delivered instantly; data fetches after hydration. The right choice for private dashboards and real-time widgets that should not expose data in server responses. We mark these routes explicitly. CSR is never the default.
Use for:
Admin panels, analytics dashboards, live feeds
User settings pages, account management
TTFB profile
Shell + hydration8ms shell, 400ms+ data
Shell is instant. Data visible after fetch completes. Never use for public pages.
Client Result
A headless ecommerce platform for premium collectibles. Built mobile-first. Delivered performance-first.
Lighthouse Performance Score
0
on mobile, production build
LCP 0.4sINP 38msCLS 0.02
Proof · CollectPCS product team reviewing new platform performance
Headless EcommerceCollectPCS
The problem
Standard ecommerce workflows could not support pre-orders, limited inventory releases, flexible payment plans, and mixed fulfillment for high-value collectibles. Performance on mobile was an afterthought.
What we delivered
Next.js headless frontend, mobile-first
Custom backend commerce logic
Inventory, pre-orders, payment plans
Why Redefine for Next.js
Three things we do that most Next.js teams skip.
01
We audit your bundle before writing your first component.
Most projects begin with component design and end with a bundle analysis that reveals regret. We start with a bundle budget: how much JavaScript is allowed per route, which dependencies are permitted, and what the maximum page weight is. This is set in writing before Sprint 1. Your Lighthouse score at delivery is not a surprise.
02
Server Components are the default. Client Components are justified in writing.
Most teams accidentally ship more JavaScript than necessary because "use client" is the default mental model for React developers who came from CRA or Vite. In every Redefine Next.js project, Server Components are the default. Every "use client" directive requires a documented reason in the component file. The result is a client bundle 40 to 60 percent smaller than average.
React development services →03
Your Core Web Vitals are measured at delivery, not promised in a proposal.
We run a Lighthouse audit and Chrome UX Report data pull on every route at handoff. The delivery document includes actual Lighthouse scores for each page category, a Core Web Vitals report from the field, and a bundle analysis export. You know exactly what you are receiving. If a score misses the agreed target, we fix it before sign-off.
Common Questions
What engineering leads ask before a Next.js engagement.
We build on Next.js 14 and 15 with the App Router. We do not use the Pages Router for new projects. The App Router with React Server Components is the default because it gives you streaming, partial rendering, and data fetching at the component level without client-side JavaScript overhead.
Our Next.js projects consistently achieve Lighthouse Performance scores of 90 or above on mobile, with most headless ecommerce projects scoring 95 to 100. Core Web Vitals targets are set in the discovery phase and measured at delivery. We use Vercel Web Analytics and Google Search Console to verify real-user data after launch.
Yes. Headless ecommerce is one of our primary Next.js use cases. We connect Next.js frontends to Shopify, BigCommerce, Medusa, and custom API backends. Product pages use Incremental Static Regeneration so they are statically served from the edge but update when inventory or pricing changes. See Node.js development services for our backend pairing approach.
A standard Create React App or Vite project renders entirely in the browser. Search engines get an empty HTML shell until JavaScript loads. With Next.js App Router, components render on the server by default, so the first HTML document already contains your content. This is the difference between a Lighthouse score of 40 and a Lighthouse score of 98 on the same design. See React development services for standalone React projects.
Next.js development engagements typically run between $40,000 and $220,000 depending on whether the project is a new build, a migration from a client-side framework, or a headless ecommerce frontend. We scope before we quote. See our Next.js pricing guide for a phase-by-phase breakdown.
Is Redefine a Fit?
Who we are the right fit for. Who we are not.
Good fit
You are migrating from a slow React SPA or Gatsby site
You are building a headless ecommerce frontend for Shopify or custom APIs
Your organic search traffic is suffering from poor Core Web Vitals
You need a full-stack TypeScript platform with Next.js frontend and Node.js backend
Not a fit
You need a simple marketing brochure site that does not require React
Your team has no capacity to review sprint demos or give async feedback
You need the project complete in under 3 weeks
Not sure? Tell us your situation and we will be straight with you.
Book a Next.js Strategy Call
Tell us about your Next.js project.
We respond within two business days. No commitment. No pitch.
Form
Brief received.
We will review your Next.js project and send an architecture proposal within 3 business days.
Prefooter · Next.js developer reviewing Core Web Vitals report
