accept-md supports App Router projects with app/ or src/app/.

Install

Run from the Next.js app root:

npx --yes accept-md@latest init
pnpm install

The CLI detects the App Router, adds the handler at app/api/accept-md/route.js or .ts, and configures requests with Accept: text/markdown to reach that handler.

Preferred routing path

For current Next.js projects, accept-md prefers next.config rewrites over middleware. Middleware remains supported for older projects and fallback setups, but rewrites are the future-facing path.

Test a page

curl -s -H "Accept: text/markdown" http://localhost:3000/

Then inspect headers:

curl -sI -H "Accept: text/markdown" http://localhost:3000/

Common exclusions

Keep API and framework paths excluded:

module.exports = {
  exclude: ["/api/**", "/_next/**"],
};

Add page-specific selectors to remove nav, footer, and other layout elements before conversion.