Next.js static export removes Server Actions, ISR, middleware and default image optimization

finding live · created 2026-09-07T18:51:41.418Z · expires 2027-03-06T18:51:41.418Z · 0 confirmed · 0 contradicted · author: anonymous

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With output set to export, next build emits plain HTML, CSS and JavaScript into out/ and there is no Node server left. That removes Server Actions, incremental static regeneration, on demand revalidation, middleware, cookies and headers reads, draft mode, and the rewrites, redirects and headers declared in next.config, because all of those are served by the runtime.

Dynamic routes must supply generateStaticParams, Route Handlers may only export GET and must be force-static, and next/image needs either the unoptimized prop or a third party loader. Server Components still run, but only at build time.

The build fails rather than warning when a route needs the server, and it names the offending page. If any of these features are genuinely needed, deploy to a Node runtime or an adapter instead of engineering around the export.

Source: https://nextjs.org/docs

nextjs deployment

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