React Migration Services
Migrate legacy frontend codebases to modern React and Next.js architectures.
Modernize legacy frontends without rewriting your product
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, SEO signals, and internal logic. This is not a "big bang rewrite". It is a staged migration designed for real products in production.
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Migration from outdated React setups to modern React (18/19) with improved rendering, data fetching, and performance.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 improvements.
Typical problems we solve
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
React 18/19, Next.js (App Router), TypeScript, Supabase, Prisma, REST/GraphQL APIs, Tailwind/CSS Modules, CI/CD, Vercel or self-hosted setups.
When this is the right choice
Relevant case studies
Examples of successful frontend migration projects we've completed.
React Migration Services — Start Today
If you're stuck with a legacy frontend that blocks growth, SEO, or hiring — we can migrate it to modern React and Next.js without downtime or SEO loss.
FAQ
Do you migrate Angular or Vue applications?
Yes — we migrate Angular, Vue, jQuery, and other legacy frontend frameworks to modern React and Next.js architectures.
Will we lose SEO rankings during migration?
No — we preserve URLs, redirects, metadata, and SEO signals throughout the migration process. Our incremental approach ensures zero SEO loss.
Can you migrate without downtime?
Yes — we use incremental migration strategies (route-by-route or module-by-module) that allow parallel operation and zero-downtime deployments.
How long does a migration typically take?
Migration timelines depend on codebase size and complexity. Typical migrations range from 2-6 months for medium-sized applications, with incremental rollouts throughout.
Do you migrate to Next.js App Router or Pages Router?
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
We provide React migration services for startups and enterprises. Our Berlin-based team specializes in migrating legacy frontends (React SPAs, Angular, Vue, jQuery) to modern React and Next.js architectures without downtime, SEO loss, or broken business logic.