We Migrate React SPAs to Next.js App Router -- Done Right
The migration process
Discovery & Audit
We map every page, post, media file, redirect, and plugin. Nothing gets missed.
Architecture Plan
New stack designed for your content structure, SEO requirements, and performance targets.
Staged Migration
Content migrated in batches. Each batch verified before the next begins.
SEO Preservation
301 redirects, canonical tags, sitemap, robots.txt — every ranking signal carried over.
Launch & Monitor
DNS cutover with zero downtime. 30-day monitoring period included.
Common questions
How long does a react to Next.js migration take?
Most projects run 6 to 14 weeks depending on route count and complexity. A 20-route SPA with standard data fetching typically finishes in 8 weeks. Larger apps with custom auth flows or complex state management push closer to 14. We scope it precisely after a codebase audit.
Do we need to rewrite all our React components?
No. Your components, hooks, and state logic carry over. What changes is the routing layer, data fetching patterns, and rendering strategy. We convert client components to server components only where it reduces bundle size. Most teams find 70-85% of their existing code migrates without modification.
Will our app go offline during the migration?
Never. We run incremental cutover -- migrating route by route while your existing SPA stays live. Each migrated route goes through staging, QA, and a feature flag flip. Your users experience zero downtime and your team can keep shipping features during the process.
What does a react to Next.js migration cost?
Our projects range from $15k for a straightforward 10-15 route SPA to $60k for large applications with authenticated flows, complex data layers, and multiple API integrations. We provide a fixed-price quote after auditing your codebase. No hourly billing surprises.
Should we use App Router or Pages Router?
We migrate to App Router for every new project. It supports React Server Components, nested layouts, and streaming -- none of which Pages Router offers. Pages Router is stable but effectively in maintenance mode. Starting a migration on it today means another migration later.
How is this different from your WordPress to Next.js migration?
WordPress migrations involve extracting content from a CMS and building a headless frontend. React to Next.js migrations keep your existing frontend code and change the framework around it. The component logic stays. The architecture, rendering, and SEO layer transform. Different starting point, different process.
Ready to migrate?
Free assessment. We'll audit your current site and give you a clear migration plan — no commitment.
Let's build
something together.
Whether it's a migration, a new build, or an SEO challenge — the Social Animal team would love to hear from you.