Migrating from WordPress to Next.js: A Practical Guide

We build Next.js front ends on headless WordPress, so we see both sides. Here's an honest picture of when switching makes sense, how to do it without losing your search traffic, and roughly how long it takes.

Why Teams Make the Switch

The most common reasons teams give:

• Performance. A well-built Next.js site is significantly faster than a WordPress site with a typical plugin stack. Static generation, edge deployment, automatic image optimization, and no PHP execution per request add up to meaningfully better Core Web Vitals.
• Security. WordPress's attack surface is large — the CMS itself, plugins, themes, and the PHP/MySQL stack all need to be kept updated and secured. A statically generated Next.js site has far fewer vectors.
• Developer experience. React component model, TypeScript, modern tooling, and deployment platforms like Vercel are where most teams are already working. Maintaining a WordPress site alongside a React frontend feels like context-switching to a different era.
• Flexibility. WordPress's page builder paradigm creates constraints when you want something that doesn't fit the plugin's assumptions. Custom Next.js gives you complete control.

The Migration Process

Step 1: Audit and inventory before you start

Pull a complete list of all published URLs from your WordPress site. The easiest way: use the WordPress export tool, which gives you an XML file of all posts and pages. Or use a crawler like Screaming Frog to capture every live URL. You need this list because every URL that has traffic or backlinks needs to either be preserved exactly or redirected correctly.

Step 2: Content migration options

You have three approaches:

• Headless WordPress: Keep WordPress as the CMS, use it via the REST API or WPGraphQL as the data source for your Next.js frontend. Content editors continue using the WordPress admin they know. This is the lowest-friction approach for teams with non-technical content editors.
• Export and convert: Export WordPress content to Markdown or MDX, store it in your repository, and use Next.js's filesystem-based content rendering. Best for sites where content is relatively stable and the team is comfortable with Git-based workflows.
• Move to a headless CMS: Migrate to Contentful, Sanity, or a similar headless CMS. Higher upfront effort but gives you a modern, API-first content platform going forward.

Step 3: SEO preservation — this is where migrations fail

The three SEO killers in CMS migrations:

URL structure changes. If your WordPress posts were at /blog/post-name/ and your Next.js site uses /blog/post-name (no trailing slash), those are technically different URLs. Make a decision on trailing slashes and add 301 redirects for every change. Every redirect you miss means losing the link equity that URL has accumulated.

Configure this in next.config.ts:

async redirects() {
  return [
    {
      source: "/old-path/:slug",
      destination: "/new-path/:slug",
      permanent: true, // sends 308, the permanent redirect Google treats like a 301
    },
  ];
},

Next.js sends 308 for permanent: true. If a tool or partner insists on a literal 301, use statusCode: 301 instead.

Missing metadata. WordPress plugins like Yoast store custom meta titles, descriptions, and canonical URLs per post. When migrating content, ensure this metadata comes along. If you're moving to a headless CMS, add metadata fields to your content model before importing.

Internal link rot. WordPress content often has absolute internal links (full URLs) rather than relative ones. After migration, these may point to the old domain or non-existent paths. Run a search on your exported content for your old domain and update internal links before going live.

Step 4: Pre-launch checklist

• Every URL from the old site either exists at the same path or has a 301 redirect
• The XML sitemap is live and submitted to Google Search Console
• robots.txt is correct (no accidental Disallow: /)
• All metadata (titles, descriptions, canonical tags) is present on every page
• Core Web Vitals measured on the new site — ideally better than the old one
• Google Search Console change-of-address tool used if the domain changed
• All forms tested end-to-end
• Analytics firing correctly on the new implementation

Timeline Expectations

As a rough planning range, not a quote: a typical company website with a blog (10 to 50 pages, 20 to 100 posts) takes 6 to 10 weeks from kickoff to launch. A larger site with complex content or a move to a different CMS takes 12 to 20 weeks.

The content migration and SEO work take longer than most people expect. Build time for the Next.js site is often faster than the structured content migration and redirect mapping.

When to Stay on WordPress

WordPress is the right choice when: your content team lives in the WordPress admin and isn't going to change; you rely on specific WordPress plugins (WooCommerce, specific membership tools, learning management systems) that would require significant rebuilding; your budget doesn't allow for a proper migration with SEO preservation; or you just don't have the developer resources to maintain a custom Next.js codebase.

A WordPress site with good hosting, a lightweight theme, aggressive caching, and image optimization can perform well enough for most business use cases. The migration cost has to be justified by a concrete outcome — better conversions, better performance, better developer velocity — not just "Next.js is the modern thing to do."

We handle moves like this as part of our web development work. For the headless route, where WordPress stays as the editor and Next.js serves the pages, see the six publishing sites we build and run that way.