pageExtensions

Extend the default page extensions used by Next.js when resolving pages in the Pages Router.

By default, Next.js accepts files with the following extensions: .tsx, .ts, .jsx, .js. This can be modified to allow other extensions like markdown (.md, .mdx).

next.config.js

const withMDX = require('@next/mdx')()
 
/** @type {import('next').NextConfig} */
const nextConfig = {
  pageExtensions: ['js', 'jsx', 'ts', 'tsx', 'md', 'mdx'],
}
 
module.exports = withMDX(nextConfig)

Output

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pageExtensions

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