> 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/page-fit.md).

# Page fit & default zoom mode in Xamarin

Control default zoom levels of pages and documents with PDFViewCtrl's page view mode. Learn about different page view modes supported and how to set default page fit mode dynamically. Optimize your vi

[`PDFViewCtrl`](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.PDFViewCtrl.html)'s page view mode controls the default zoom level of pages and documents. New documents will automatically open at the zoom level specified by the mode.

## Page view modes

`PDFViewCtrl` supports the following page view modes:

| Page view mode (Xamarin.Android / Xamarin.iOS)                                   | Description                                                            | Screenshot-portrait                                                                                                                                                                                                                              | Screenshot-landscape                                                                                                                                                                                                                             |
| -------------------------------------------------------------------------------- | ---------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `PDFViewCtrl.PageViewModes.FitPage` / `pdftron.PDF.PageViewModes.e_fit_page`     | The zoom is set so that the entire page is visible without scrolling.  | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-75dac026a54c93293e068ea0126e7b2254223347%2F3bc90440e459b1e155b0f9a9a7b9f754b42cd5a3-1226x2502.png?alt=media) | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-59ee3c57818fc825dd337857ea392d65db11b26e%2F841cc04ecb1c2ef5520ce434ba27648c5bbaa084-2502x1226.png?alt=media) |
| `PDFViewCtrl.PageViewModes.FitWidth` / `pdftron.PDF.PageViewModes.e_fit_width`   | The zoom is set so that the page's width matches the viewer's width.   | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-75dac026a54c93293e068ea0126e7b2254223347%2F3bc90440e459b1e155b0f9a9a7b9f754b42cd5a3-1226x2502.png?alt=media) | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-74b859d92340e86d05d9af23069457d040ecbea5%2F42f381b7f550ab570da82f3afa419094122b4fd6-2502x1226.png?alt=media) |
| `PDFViewCtrl.PageViewModes.FitHeight` / `pdftron.PDF.PageViewModes.e_fit_height` | The zoom is set so that the page's height matches the viewer's height. | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-79b17d5d72e78c79c78f49f46ce25c5551cfc569%2Fb5d49d5c12472369c3a26dacaeb96562b27c6b86-1226x2502.png?alt=media) | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-59ee3c57818fc825dd337857ea392d65db11b26e%2F841cc04ecb1c2ef5520ce434ba27648c5bbaa084-2502x1226.png?alt=media) |
| `PDFViewCtrl.PageViewModes.Zoom` / `pdftron.PDF.PageViewModes.e_zoom`            | The viewer's zoom is not adjusted based on the page.                   | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-572196d94e5fa9ef10e4f80437b30d02f03c79b8%2Ff75a6a20b2eff23f7081d162d834b79adc01cf57-1226x2502.png?alt=media) | ![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-0919e301109558a25e8cd471fdaaa13fafef21aa%2F0ac86387d778f0aa34b4652898261bdfa4813f8a-2502x1226.png?alt=media) |

## Set the default page fit mode

You can set a default page fit mode in your `PDFViewCtrl` by using `PageRefViewMode` property.

## Set the page fit mode dynamically

If you want to dynamically change the page fit mode, use `PageViewMode` property. Note that when the user flips the page, the page view mode will be automatically reset to the default mode set by `PageRefViewMode`.

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

```csharp
// Xamarin.Android
mPdfViewCtrl.PageViewMode = pdftron.PDF.PDFViewCtrl.PageViewModes.FitPage;

// Xamarin.iOS
mPdfViewCtrl.PageViewMode = pdftron.PDF.PageViewModes.FitPage;
```

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


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