Use the `webkitdirectory` attribute to allow directory selection.
**Note:** As it is a non-standard attribute, browser support may vary. See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/input/file#webkitdirectory) for more information.

```html
<sd-file-selector label="Select a directory to upload" show-label webkitdirectory></sd-file-selector>
```