File-system conventions

Last updated April 23, 2026

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instrumentation.js

API reference for the instrumentation.js file.

](instrumentation/index.md)[

Proxy

Learn how to use Proxy to run code before a request is completed.

](proxy/index.md)[

public

Next.js allows you to serve static files, like images, in the public directory. You can learn how it works here.

](public-folder/index.md)[

src Directory

Save pages under the `src` folder as an alternative to the root `pages` directory.

](src-folder/index.md)

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