React & Next.js Migration
Structured frontend migration to React & Next.js — with minimal downtime and SEO protection.
Many teams are stuck with legacy frontends: old React SPAs, Angular/Vue apps, jQuery layers, or SEO-blind architectures that no longer scale. We migrate these systems to modern React and Next.js in a controlled, measurable way — preserving functionality, URLs, key SEO signals, and internal logic where possible. This is not a "big bang rewrite". It is a staged migration designed for products operating in production environments.
What we migrate
Comprehensive migration services for legacy frontend architectures.
Legacy React SPAs
Migration from outdated React setups to modern React (18/19) with improved rendering, data fetching, and performance.
Angular / Vue / Mixed Frontends
Step-by-step migration to React/Next.js without breaking existing workflows.
SEO-blind architectures
SPAs migrated to SSR / SSG / ISR with proper metadata, structured data, and indexable pages.
Monolithic Frontends
Refactoring toward modular architectures and clear domain boundaries.
Performance-bottlenecked UIs
Migration combined with bundle reduction, rendering optimization, and Core Web Vitals optimization.
Typical problems we solve
Poor SEO due to client-side rendering only
Slow first load and heavy JavaScript bundles
Fragile legacy codebases that block feature development
Inconsistent UI and duplicated logic
Risky "rewrite from scratch" proposals
How we work
Step 01 — Migration Audit
Codebase analysis, dependency mapping, routing & SEO review, and risk assessment.
Step 02 — Target Architecture Design
Next.js structure (App Router / Pages), rendering strategy (SSR/SSG/ISR), data layer, and routing plan.
Step 03 — Incremental Migration
Route-by-route or module-by-module migration with parallel operation and feature parity.
Step 04 — SEO & Performance Validation
URL parity, redirects, metadata, Core Web Vitals, and regression testing.
Step 05 — Rollout & Handover
Safe rollout, documentation, and team enablement.
What you get
Technologies
When this is the right choice
- You need better SEO without losing traffic
- Legacy frontend blocks growth or hiring
- You want SSR / RSC / modern data fetching
- A full rewrite is too risky
Every engagement begins with an Architecture Sprint
Five working days. One senior engineer. A clear map of system boundaries, scaling risks, stack decisions, and a delivery roadmap — before a single line of production code.
- 01Day 1
Discovery: domain, constraints, growth targets
- 02Day 2
System mapping: services, data, integrations
- 03Day 3-4
Stack decisions and risk model
- 04Day 5
Roadmap & costed delivery plan
Ready to start with architecture, not features?
Five days. One senior engineer. A clear path forward.
Or talk to us first Get in touch
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FAQ
Yes — we migrate Angular, Vue, jQuery, and other legacy frontend frameworks to modern React and Next.js architectures.
Our approach is designed to minimize SEO risk: URL parity, redirects, metadata, incremental rollouts, and performance validation during migration.
Yes — we use incremental migration strategies (route-by-route or module-by-module) that allow parallel operation and deployments with minimal downtime.
Migration timelines depend on codebase size and complexity. Typical migrations often take several months for medium-sized applications, with incremental rollouts throughout.
We recommend and implement Next.js App Router for new migrations, but can work with Pages Router if needed. The choice depends on your requirements and timeline.
Related Services
React migration for companies modernizing production frontend systems. We support organizations with legacy frontend migration, React and Next.js architecture transitions based on the specific technical and regulatory context of each project. All services are delivered individually and depend on system requirements and constraints.