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WEB DEVELOPMENT

Your Site Speed is Costing You Customers. We Fix That.

If you're a founder watching bounce rates climb while competitors load in under a second, your stack is the problem.

WEB DEVELOPMENT AT A GLANCE
  • Fixed fee
  • Senior-led
  • 95+LIGHTHOUSE AVG
  • 12+ yrsSENIOR-LED
  • Fixed feeNO SCOPE CREEP
  • 200+PROJECTS SHIPPED
CLUTCH 5.0 VERIFIED

Overview — 01

We rebuild or migrate your site to Next.js with React Server Components, hitting LCP under 2.5 seconds and Core Web Vitals scores that hold under real traffic. Every project ships with structured SEO architecture, route-level performance budgets, and deployment pipelines you can hand to your own team without us in the room.

Next.js Development

Next.js development is the practice of building production web applications on the Next.js framework using React Server Components, file-based routing, and edge-optimised rendering strategies. Done correctly, it produces sites that load fast on first visit, rank well in organic search, and scale without rewrites. We treat performance and SEO architecture as engineering constraints, not afterthoughts.

The gap — 02

What is holding your current website back?

Common gaps we find in nearly every audit.

Your current site takes over four seconds to reach Largest Contentful Paint on mobile, and you can see the drop-off in session recordings.
Risk: Google uses Core Web Vitals as a ranking signal, and every 100ms of additional load time measurably increases bounce rate. Slow pages compound: poor UX, lower conversion, and reduced organic visibility all hit at once.
Your engineering team has outgrown a CMS-driven monolith but lacks the internal capacity to plan and execute a migration without disrupting current traffic.
Risk: A poorly planned migration can wipe months of accumulated domain authority. Without redirect mapping, structured data preservation, and pre-launch crawl validation, you are trading one problem for a worse one.
You shipped a React SPA that scores well in development but fails Core Web Vitals in the field because everything renders client-side.
Risk: Client-rendered SPAs send search engines and real users a near-empty HTML document on first load. The gap between your Lighthouse score and your real-user data widens every time you add a third-party script.

Safeguards — 03

How we build this right

Every safeguard, built in from Day 1.

Core Web Vitals Targets Written Into Scope

LCP, CLS, and INP thresholds are defined before a line of code is written. We measure against field data using Chrome UX Report, not lab simulations, and do not close a project until real-user metrics pass.

SEO Architecture Preserved Through Every Deploy

Canonical tags, structured data schemas, XML sitemaps, and redirect chains are audited pre-migration and verified post-launch with a crawl diff. No page drops its index status without a documented decision.

Security Headers and Dependency Governance

Every project ships with Content Security Policy, HSTS, and X-Frame-Options configured at the edge. Third-party dependencies are audited for known CVEs before they enter the build, and a lock-file policy prevents silent version drift.

Scope — 04

What we build

Purpose-built features for your industry.

React Server Components Architecture

We design your component tree so data-heavy rendering happens on the server, reducing JavaScript sent to the browser. Client components are scoped to genuinely interactive elements, keeping your bundle lean and your Time to Interactive low.

Route-Level Performance Budgets

Each route in your application is assigned a JavaScript size budget, image weight ceiling, and third-party script allowance before build. Budgets are enforced in CI so performance regressions are caught before they reach production.

Incremental Static Regeneration for Dynamic Content

Pages that need fresh data but can tolerate a short staleness window are built with ISR, giving you static-speed delivery without a full rebuild cycle. Revalidation intervals are tuned per route based on your actual content change frequency.

Structured Handover With Internal Documentation

We write component-level documentation, environment variable guides, and deployment runbooks in your own repository. Your team can add features, run builds, and roll back without scheduling a call with us.

Process — 05

Our development process

From discovery to launch. Quality at every step.

01

Technical Audit and Scope Definition

1 week

We crawl your existing site, profile real-user performance data, map your current information architecture, and document every third-party dependency. The output is a scoped statement of work with explicit performance targets, not a generalised proposal.

02

Architecture Design and Component Planning

1-2 weeks

We define the rendering strategy for each route, design the component hierarchy, specify the data-fetching pattern, and produce a redirect map covering every URL that carries SEO value. Nothing enters development without a reviewed design document.

03

Build, Integration, and Performance Validation

2-4 weeks

Development runs in two-week cycles with a staging environment that mirrors production infrastructure. Core Web Vitals are measured against the Chrome UX Report after each cycle, and third-party integrations are load-tested before sign-off.

04

Launch, Crawl Verification, and Handover

1 week

We manage the production cutover, run a post-launch crawl diff to confirm no indexable pages were lost, and verify real-user metric baselines in Search Console. Handover includes a recorded walkthrough and all documentation committed to your repository.

Social Animal

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Related resources — 06

Questions — 07

Frequently asked questions

Here's the thing -- hiring an agency isn't just buying hours. You're buying a whole system of decisions that would take an in-house developer years to develop instincts for. Architecture choices, SEO strategy, performance engineering, deployment infrastructure -- it all arrives as one coherent package rather than a pile of disconnected pieces you have to stitch together yourself. Freelancers build features. Agencies build systems that rank, convert, and actually hold up when traffic spikes hit. Social Animal has shipped 5,000+ projects across Next.js, Astro, and headless CMS platforms, so we've seen what works and -- maybe more importantly -- what quietly kills a site's performance six months after launch.
Pricing honestly depends on what you're actually building. A marketing site or content platform typically runs GBP 8,000--25,000. But once you're adding auth flows, API integrations, and an admin dashboard, you're looking at GBP 25,000--80,000 for a full web application. Enterprise projects -- think multi-tenant architecture, i18n, programmatic SEO at scale -- start at GBP 50,000. And those numbers aren't ballpark guesses we adjust later. Every project gets a fixed-price quote upfront, so there's no invoice surprise three months in.
We've used App Router exclusively for every new project since 2024, full stop. Server components, streaming SSR, parallel data fetching -- these aren't nice-to-haves you can skip for "simpler" projects. The performance advantages are too significant to ignore, especially for anything SEO-sensitive. Plus, Pages Router is essentially in maintenance mode now. If you're still running a Pages Router codebase, we handle that migration as part of our modernisation service -- it's something we've done enough times that the process is pretty dialled in.
SEO isn't something we bolt on after the site launches -- it's baked into how we write the code from day one. That means metadata API configuration, structured data via JSON-LD, sitemap generation, canonical URLs, and hreflang tags for multilingual builds all get handled during the actual build phase. Not as an afterthought. Core Web Vitals optimisation happens there too, which is why every page we ship hits Lighthouse 90+ scores. So when the site goes live, it's already in good shape for Google -- not starting a six-week remediation process.
Yes, we do migrations -- WordPress, Drupal, Webflow, Squarespace, legacy React apps, you name it. The real kicker with migrations is usually the SEO equity question: years of backlinks and ranking signals that vanish if you handle redirects carelessly. We build full redirect maps to preserve every URL, transfer that equity properly, and in practice typically see Lighthouse scores improve by 30--50 points after the move. Most migrations wrap up in 6--10 weeks depending on content volume and how messy the original codebase is.
Vercel is our default for Next.js deployments -- it gives the best developer experience-to-performance ratio for the majority of projects, and honestly it's hard to argue with that for most use cases. But we're not locked into it. We deploy on AWS too, using Amplify or Lambda@Edge depending on the setup, plus Cloudflare Pages and self-hosted Node.js when a client's infrastructure requirements point that direction. Some enterprise clients in regulated industries specifically need self-hosted. So the deployment target follows the project's actual needs rather than our tooling preferences.

More solutions — 08

Explore related industries

Need enterprise scale?

200+ employee company? Complex multi-tenant, auction, or multi-location requirement? We have a dedicated enterprise capability track.

View Enterprise Hub

Get started — 09

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