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What is Headless WordPress?

Headless WordPress means using WordPress purely as a content management system — editors create posts in the familiar WordPress dashboard — while a separate Next.js (or other React) frontend fetches that content via the WordPress REST API or GraphQL and renders it as fast, static HTML.

Who it's for: Businesses that have invested in WordPress content and training but find their site is slow, failing Core Web Vitals, or unable to support custom features. Also useful for larger editorial teams who need the WordPress editing experience but want a performance-grade frontend.

What it costs: A headless WordPress migration typically costs €6,000–€15,000 depending on the number of content types and custom integrations. Ongoing hosting costs increase slightly because you now run two services — WordPress and the Next.js frontend.

Headless is the right choice if you have significant WordPress content and a team trained on it, but your site speed and custom feature requirements have outgrown the traditional WordPress stack.

What it is

Traditional WordPress couples content management and frontend rendering in a single PHP application. Every page request hits a PHP server, pulls from a MySQL database, and renders HTML — often slowly, especially with plugins. Headless WordPress decouples these two responsibilities. WordPress becomes a 'headless' CMS — a backend API that stores content and exposes it through the WordPress REST API or WPGraphQL. A separate Next.js application fetches that content and renders pages as fast, pre-built HTML, served from a CDN.

Why it matters

The typical WordPress site with a page builder and a dozen plugins scores 40–60 on Lighthouse mobile. A headless setup with the same content, served via Next.js on Vercel, commonly scores 90+. That difference translates to lower bounce rates, higher search rankings, and more conversions. According to Google's research on Web Vitals, 53% of mobile users abandon a page that takes more than 3 seconds to load.

When you need it

Headless WordPress makes sense when you need to keep existing WordPress content and editorial workflows, but your current site is too slow, failing Core Web Vitals, or needs custom features — like a booking system or user dashboard — that plugin-based WordPress can't deliver cleanly.

Source: WordPress REST API documentation

People Also Ask

Is headless WordPress worth the extra cost?: If page speed and custom features are business priorities, yes. If your WordPress site already passes Core Web Vitals and you don't need complex custom functionality, a full headless migration may not be worth it — targeted performance optimisation might be enough.
What's the difference between headless WordPress and traditional WordPress?: Traditional WordPress renders pages on a PHP server using themes and plugins. Headless WordPress uses WordPress only as a content database, serving content via an API to a separate frontend (typically Next.js) that renders fast, static HTML pages.
Does headless WordPress break my existing plugins?: Yes — most frontend plugins (sliders, page builders, visual editors) stop working because the PHP theme layer is gone. Backend plugins (forms, SEO metadata, e-commerce data) often still work because they use the REST API. A full audit is essential before migrating.
How long does a headless WordPress migration take?: A typical marketing site with 5–20 pages takes 2–3 weeks. Larger sites with custom post types, WooCommerce, or complex content relationships take 4–8 weeks. The majority of the time is spent mapping content types, not writing the frontend.
Can I edit my headless WordPress site without a developer?: Yes — content editing in the WordPress dashboard works exactly as before. Structural changes to the frontend (new sections, design changes) still require a developer because they're in the Next.js codebase, not WordPress.

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