next.config.js Options
Next.js can be configured through a next.config.js file in the root of your project directory.
next.config.js
/** @type {import('next').NextConfig} */
const nextConfig = {
/* config options here */
};
module.exports = nextConfig;This page documents all the available configuration options:
appDir
Enable the App Router to use layouts, streaming, and more.
assetPrefix
Learn how to use the assetPrefix config option to configure your CDN.
basePath
Use `basePath` to deploy a Next.js application under a sub-path of a domain.
compress
Next.js provides gzip compression to compress rendered content and static files, it only works with the server target. Learn more about it here.
devIndicators
Optimized pages include an indicator to let you know if it's being statically optimized. You can opt-out of it here.
distDir
Set a custom build directory to use instead of the default .next directory.
env
Learn to add and access environment variables in your Next.js application at build time.
eslint
Next.js reports ESLint errors and warnings during builds by default. Learn how to opt-out of this behavior here.
exportPathMap
Customize the pages that will be exported as HTML files when using `next export`.
generateBuildId
Configure the build id, which is used to identify the current build in which your application is being served.
generateEtags
Next.js will generate etags for every page by default. Learn more about how to disable etag generation here.
headers
Add custom HTTP headers to your Next.js app.
httpAgentOptions
Next.js will automatically use HTTP Keep-Alive by default. Learn more about how to disable HTTP Keep-Alive here.
images
Custom configuration for the next/image loader
mdxRs
Use the new Rust compiler to compile MDX files in the App Router.
onDemandEntries
Configure how Next.js will dispose and keep in memory pages created in development.
output
Next.js automatically traces which files are needed by each page to allow for easy deployment of your application. Learn how it works here.
pageExtensions
Extend the default page extensions used by Next.js when resolving pages in the Pages Router.
poweredByHeader
Next.js will add the `x-powered-by` header by default. Learn to opt-out of it here.
productionBrowserSourceMaps
Enables browser source map generation during the production build.
reactStrictMode
The complete Next.js runtime is now Strict Mode-compliant, learn how to opt-in
redirects
Add redirects to your Next.js app.
rewrites
Add rewrites to your Next.js app.
Runtime Config
Add client and server runtime configuration to your Next.js app.
serverComponentsExternalPackages
Opt-out specific dependencies from the Server Components bundling and use native Node.js `require`.
trailingSlash
Configure Next.js pages to resolve with or without a trailing slash.
transpilePackages
Automatically transpile and bundle dependencies from local packages (like monorepos) or from external dependencies (`node_modules`).
turbo
Configure Next.js with Turbopack-specific options
typedRoutes
Enable experimental support for statically typed links.
typescript
Next.js reports TypeScript errors by default. Learn to opt-out of this behavior here.
urlImports
Configure Next.js to allow importing modules from external URLs (experimental).
webpack
Learn how to customize the webpack config used by Next.js
webVitalsAttribution
Learn how to use the webVitalsAttribution option to pinpoint the source of Web Vitals issues.