> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/xamarin/basic-operations/basics/crop-pages.md).

# Cropping PDF pages in Xamarin

Cropping PDF pages in Xamarin is easy with the Apryse library, you can crop pages manually or automatically, as well as reset document pages to their original size. The UserCropDialogFragment allows a

{% hint style="info" %}
**This tutorial only applies to Xamarin.Android.**
{% endhint %}

With the Apryse library you can crop pages manually or automatically, as well as reset document pages to their original size. The [`UserCropDialogFragment`](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.UserCropDialogFragment.html) allows a user to adjust the page's crop box which can then be applied to a subset of pages or to all the pages in a document.

![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-829d16c6a0dd2a2b5a4590c036eb396908a49aeb%2Fbe20e1f5d7b00edf611f9ef5a75f79ddedd90f7c-600x1200.gif?alt=media)

## Show user crop pages dialog

To show a user crop pages dialog in your activity, create a new instance of [`UserCropDialogFragment`](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.UserCropDialogFragment.html) by calling `newInstance()` and setting the [`PDFViewCtrl`](https://sdk.apryse.com/api/xamarinandroid/pdfnet/api/pdftron.PDF.PDFViewCtrl.html):

{% tabs %}
{% tab title="C#" %}
{% code lineNumbers="true" %}

```csharp
public void ShowUserCropDialog()
{
    var userCropDialogFragment = pdftron.PDF.Controls.UserCropDialogFragment.NewInstance()
        .SetPdfViewCtrl(mPdfViewCtrl);
    userCropDialogFragment.SetStyle((int)DialogFragmentStyle.NoTitle, Resource.Style.PDFTronAppTheme);
    userCropDialogFragment.Show(this.SupportFragmentManager, "user_crop_pages_dialog");
}
```

{% endcode %}
{% endtab %}
{% endtabs %}

In order to view user cropped pages in [`PDFViewCtrl`](https://sdk.apryse.com/api/xamarinandroid/pdfnet/api/pdftron.PDF.PDFViewCtrl.html) make sure you set `Page.e_user_crop` as the default page box:

{% tabs %}
{% tab title="C#" %}
{% code lineNumbers="true" %}

```csharp
mPdfViewCtrl.SetPageBox(pdftron.PDF.Page.Box.e_user_crop);
```

{% endcode %}
{% endtab %}
{% endtabs %}


---

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