Migrating a WordPress site to a headless architecture: WordPress kept as the back office or replaced by a headless CMS, pre-rendered Next.js or Astro front-end, plugins requalified one by one, SEO preserved.
Going headless with WordPress covers two projects with different costs and risks. Keep WordPress as the back office: editors keep the tool they know, the front-end reads content through the native WordPress REST API or the WPGraphQL plugin, and only the presentation layer is rebuilt. Leave WordPress: content moves to a headless CMS (Strapi, Directus, Payload) and WordPress is retired. The first path modernizes the front-end without changing editorial habits; the second also clears the back-office debt, at the cost of a content migration and team training.
Three signals make the question worth asking.
This is the heart of the scoping: once headless, the WordPress theme no longer renders anything, so everything that produced HTML has to be taken over.
For a brochure site of a few dozen pages, with no mobile app or other channel and no long-term technical team, an updated and slimmed-down WordPress remains cheaper. Headless pays off when at least three of the six questions on our CMS to headless migration page get a yes. If the main need is multi-author editorial work or advanced multilingual, see also WordPress to Drupal migration.
WordPress with a theme, plugins and a page builder (Elementor, ACF, Yoast, forms)
Pre-rendered Next.js or Astro front-end, content served by headless WordPress or a headless CMS
Simple content (posts, pages, categories) and no wish to install anything more on WordPress. The shortest path.
Structured content with many custom fields and relationships: a single query fetches a complete page.
The WordPress back office itself is end-of-life or overloaded with plugins: the migration clears both debts at once. Comparison on CMS to headless migration.
Small technical team publishing itself, low publishing pace: content lives in the code repository, no back office to maintain.
Simple brochure site, editors working without technical support: upgrade PHP and plugins, remove the ones nobody uses.
Indicative estimate, to be confirmed at scoping: plan 8 to 16 weeks depending on content volume, the number of layouts to rebuild (page builders) and third-party integrations. Keeping WordPress as the back office sits at the low end of the range; moving to another CMS, at the high end. Typical team: a project manager, two front-end developers (Next.js or Astro), a WordPress developer for the API and content migration, a part-time SEO lead.
SEO lost at cutover: URL changes, forgotten Yoast metadata, incomplete redirects.
Map every URL before the first line of code, exhaustive 301 redirect table, metadata read from WordPress by the front-end, Search Console monitoring after go-live.
Broken editor preview: once headless, the WordPress Preview button no longer shows the real page.
Front-end draft mode (Next.js draft mode) wired to WordPress, so editors see the final page before publishing. Plan it at scoping, not after the complaints.
Shortcodes and blocks that output HTML: content reaches the front-end with markup the new design cannot display.
Inventory of the shortcodes and blocks in use, conversion into front-end components, tests on a sample of each page type before the bulk migration.
Misunderstood publishing delay: with a pre-rendered front-end, a page published in WordPress only appears once the site is regenerated.
Regeneration triggered automatically on every publish, or incremental regeneration of changed pages only; the delay is explained to editors before cutover.
access-international.dev moved from WordPress to a statically exported Next.js front-end on 23 April 2026, bilingual French and English, with the redirects from the old WordPress URLs preserved. We kept no CMS: this is an example of a pre-rendered front-end, not of headless WordPress.
Hands-on WordPress experience through delivered projects: Azur City (WordPress multi-site platform for 3 shopping malls) and Gnet News (WordPress news portal). This back-office practice is what we use to qualify the estate to migrate: plugins, custom fields, taxonomies, media.
Yes, and it is often the best entry point. WordPress stays the editors' back office; the front-end is rebuilt separately and reads content through the native REST API or WPGraphQL. Only the presentation layer changes.
The REST API ships with WordPress and is enough for simple content. WPGraphQL requires a plugin but fetches a complete page in a single query: it becomes the better choice as soon as custom fields and relationships multiply.
Elementor layouts cannot be reused as-is through the API: they are rebuilt as front-end components, the heaviest item in the estimate. Headless WooCommerce is a separate project; if the shop works, we generally recommend leaving it on WordPress and decoupling only the editorial side.
It can, provided it is handled before the first line of code: URL mapping, exhaustive 301 redirects, metadata carried over from WordPress, Search Console monitoring after go-live. No migration is immune to traffic fluctuation: monitoring is there to catch it early. See also our CMS to headless migration page.
Cost depends mainly on the number of layouts to rebuild (page builders), then on whether WordPress stays as the back office, and on integrations (forms, CRM, email marketing). Free initial scoping call, 30 minutes to 2 hours.
We frame the trajectory, the budget, and the deliverables in a first thirty-minute conversation. A short POC can be proposed before committing to the full program.
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