> For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt.

# html.outputStructure

- **Type:** `'flat' | 'nested'`
- **Default:** `'flat'`

Define the directory structure of the HTML output files.

## Example

By default, the structure of HTML files in the `dist` directory is `flat`:

```bash
/dist
 └── [name].html
```

You can set `html.outputStructure` to `nested`:

```ts title="rsbuild.config.ts"
export default {
  html: {
    outputStructure: 'nested',
  },
};
```

After rebuild, the directory structure of the HTML files is:

```bash
/dist
 └── [name]
     └── index.html
```

> If you want to set the parent path of the HTML files, use the [output.distPath.html](/config/output/dist-path.md) config.