Migrating WordPress to Sanity + Next.js is mostly a data engineering problem. The decisions around whether to migrate are covered elsewhere — this post is purely about the mechanics: getting content out of WordPress, shaping it into typed Sanity documents, and making sure Google never sees a broken URL.
I'll walk through the four stages I use on every migration: export, schema mapping, import scripting, and redirect wiring.
Exporting WordPress content
WordPress gives you two export paths. The WXR (WordPress eXtended RSS) XML file you get from Tools → Export is fine for small sites, but it serialises everything into one flat file and the HTML inside <content:encoded> nodes is a pain to parse. I prefer the REST API for anything above a few hundred posts.
For a typical site with posts, pages, and categories I pull:
