(Next.js Development · London)
The framework that wins
on speed, SEO,
and developer time.
WebAnts is a London Next.js development agency. We build marketing sites, SaaS platforms, and headless ecommerce stores with Next.js App Router, deployed to Vercel, scoring 90+ on Lighthouse.
90+
Lighthouse score, every build
20+
Next.js sites shipped
<2s
Target LCP on all projects
1.8×
Faster than industry avg
(Why Next.js)
Three reasons our clients
choose Next.js every time.
90+
Lighthouse SEO score
Built for SEO
Server Components render HTML on the server, search engines index content without waiting for JavaScript. Combined with ISR and metadata API, Next.js sites outrank React SPAs on identical content.
<100ms
Global TTFB
Edge-fast by default
Static pages at the edge, dynamic routes with streaming, and automatic image optimisation via next/image. Vercel's global CDN means sub-100ms TTFB worldwide.
1.8×
Faster than avg
Ship faster
App Router file-based routing, co-located data fetching, and TypeScript from day one means we build in less time and you get fewer bugs. We've shipped 20+ Next.js sites, the patterns are settled.
(What we build)
Eight Next.js services,
all in-house.
01
Marketing Sites (App Router)
Performant marketing sites built with Next.js App Router, Server Components, and a headless CMS (Sanity, Contentful, or WordPress). ISR for near-instant page updates.
02
SaaS & Web Applications
Full-stack Next.js apps with API Routes, Server Actions, authentication (Lucia / Clerk), Stripe billing, and PostgreSQL. Type-safe from database to UI.
03
Headless CMS Integration
Next.js frontend connected to Sanity, Contentful, or headless WordPress. GROQ / GraphQL queries, live preview mode, and on-demand ISR via webhooks.
04
Next.js Ecommerce
Headless Shopify or WooCommerce + Next.js for maximum performance and design flexibility. Storefront API, cart state, checkout redirect, and ISR for product pages.
05
Migrations to Next.js
Migrate from Create React App, Gatsby, or legacy WordPress to Next.js App Router. Route parity, 301 redirect map, CMS migration, and SEO preservation.
06
API Routes & Server Actions
Internal API endpoints, webhook handlers, form processing, and server-side integrations, all co-located in your Next.js project and deployed to Vercel Edge Functions.
07
Performance Audits
Lighthouse and Core Web Vitals audit on existing Next.js codebases. Identify and fix bundle size issues, hydration waterfalls, image loading, and edge caching misconfigurations.
08
Dashboard & Internal Tools
Admin panels, data dashboards, and internal tools built on Next.js with role-based access, chart libraries (Recharts, Victory), and real-time data via Server-Sent Events or polling.
(How we work)
Architecture first.
Ship weekly.
Architecture
Agree data fetching patterns, caching strategy, CMS choice, auth model, and deployment setup before writing a line of code.
Design
Figma designs for every template and interactive state. Approved before build, no redesigning in code.
Build
TypeScript, App Router, Server Components by default. Weekly staging deploys. Lighthouse checks run on every PR.
Launch
Vercel or self-hosted deployment, redirects, Search Console, and two weeks post-launch support.
(FAQ)
Next.js questions,
answered honestly.
Why Next.js over plain React?
Next.js adds what React lacks out of the box: server-side rendering for SEO, file-based routing, automatic image optimisation, API routes, and a deployment-ready configuration. For anything that needs to rank on Google, serve pages quickly to a global audience, or fetch data server-side, Next.js is the right choice over a plain React SPA.
Next.js App Router or Pages Router?
We build all new projects on the App Router (introduced in Next.js 13, stable since 14). It enables Server Components, co-located data fetching, streaming, and nested layouts, meaningful improvements over the Pages Router. For projects on the Pages Router, we'll maintain and extend existing code without forcing migration unless there's a clear benefit.
What CMS do you pair with Next.js?
Our default recommendation is Sanity, its GROQ query language, live preview, and flexible content model pair exceptionally well with Next.js. For clients already on Contentful or headless WordPress, we build against those APIs. We recommend the CMS that best fits your content complexity, team size, and budget.
Do you deploy to Vercel?
Vercel is our default deployment platform for Next.js, it's built by the same team and optimises for Next.js-specific features (ISR, Edge Runtime, Image Optimisation). If your organisation has infrastructure requirements (AWS, GCP, self-hosted), we deploy there too and configure Next.js's standalone output mode accordingly.
How much does a Next.js website cost?
A marketing site with Next.js + Sanity CMS typically costs £8,000–£18,000. A headless ecommerce store with Next.js + Shopify typically costs £12,000–£25,000. A Next.js SaaS application typically costs £20,000–£60,000+. Flat written quote after a free discovery call.
Can you migrate our existing site to Next.js?
Yes. We've migrated sites from WordPress, Gatsby, Create React App, and legacy frameworks to Next.js App Router. The process includes route parity mapping, a 301 redirect plan, CMS migration if needed, and pre/post-launch SEO monitoring in Google Search Console.
(Start a project)
Free 30-min call.
Flat quote.
No prepayment.
Tell us what you’re building. We’ll come to the call with a view on architecture and timeline already formed.
WebAnts is a London Next.js development agency. We build Next.js marketing sites, SaaS platforms, headless ecommerce stores, and web applications using App Router, Server Components, TypeScript, and Vercel. Based in London, serving clients across the UK and worldwide. 4.9★ rated on Google and Clutch.