> 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/android/viewer/rtl-support.md).

# Supporting right-to-left (RTL) language documents in Android

Enhance your document viewer with Apryse SDK's RTL language support. Enable right-to-left mode easily with ViewerConfig for a seamless reading experience. Learn more about enabling RTL in your PDF vie

To support right-to-left (RTL) language documents, the Apryse SDK provides a high-level API for changing the reading direction of documents in your document viewer.

![](https://226546913-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0QItsdFBmuuL9ezHimHy%2Fuploads%2Fgit-blob-17c6de4c893c82e37736367178f68940218bed3c%2F7ad05b69228fc07c9a31b7ebd9c30b10dc991ede-1080x2220.gif?alt=media)

If you are using [DocumentActivity](/android/open-save-document/open/activity.md) or [PdfViewCtrlTabHostFragment2](/android/open-save-document/open/fragment.md), you can enable right-to-left (RTL) support in your document viewer by setting it with [ViewerConfig](/android/viewer/fragment-config.md):

{% tabs %}
{% tab title="Java" %}
{% code lineNumbers="true" %}

```java
ViewerConfig.Builder builder = new ViewerConfig.Builder();
ViewerConfig config = builder
    .fullscreenModeEnabled(true)
    .multiTabEnabled(true)
    .documentEditingEnabled(true)
    .longPressQuickMenuEnabled(true)
    // ...
    .rightToLeftModeEnabled(true)   // Enable RTL mode, must also call showRightToLeftOption
    .showRightToLeftOption(true)    // Show RTL toggle button in view mode dialog
    .build();
```

{% endcode %}
{% endtab %}

{% tab title="Kotlin" %}
{% code lineNumbers="true" %}

```kotlin
val builder = ViewerConfig.Builder()
val config = builder
    .fullscreenModeEnabled(true)
    .multiTabEnabled(true)
    .documentEditingEnabled(true)
    .longPressQuickMenuEnabled(true)
    // ...
    .rightToLeftModeEnabled(true)   // Enable RTL mode, must also call showRightToLeftOption
    .showRightToLeftOption(true)    // Show RTL toggle button in view mode dialog
    .build()
```

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

{% tabs %}
{% tab title="Java" %}
{% code lineNumbers="true" %}

```java
ViewerConfig.Builder builder = new ViewerConfig.Builder();
ViewerConfig config = builder
    .FullscreenModeEnabled(true)
    .MultiTabEnabled(true)
    .DocumentEditingEnabled(true)
    .LongPressQuickMenuEnabled(true)
    // ...
    .RightToLeftModeEnabled(true)   // Enable RTL mode, must also call showRightToLeftOption
    .ShowRightToLeftOption(true)    // Show RTL toggle button in view mode dialog
    .Build();
```

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

{% hint style="info" %}
Note that if you call `rightToLeftModeEnabled` you must also call `showRightToLeftOption` in order for right-to-left (RTL) mode to be enabled.
{% endhint %}

If you would like more granular control over your document viewer, you can enable right-to-left (RTL) directly in [PDFViewCtrl](/android/open-save-document/open/view.md) by calling `PDFViewCtrl.setRightToLeftLanguage(true)`.


---

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