> 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/editing-page-content/samples.md).

# Code samples to edit PDFs in Android

Learn how to edit, insert images, search & replace text, stamp files, extract images, and more with this PDF Editor (Programmatic) sample code. Explore UI samples in the Android showcase app. The Apry

[PDF Editor (Programmatic)](/android/get-started/samples.md#elementedit) The sample code shows how to edit the page display list and how to modify graphics state attributes on existing Elements.

[Insert an image into a PDF](/android/get-started/samples.md#addimage) This sample illustrates how to embed various raster image formats (e.g. TIFF, JPEG, JPEG2000, JBIG2, GIF, PNG, BMP, etc.) in a PDF document.

[Search & replace PDF text or images](/android/get-started/samples.md#contentreplacer) This sample shows how to use pdftron.PDF.ContentReplacer to search and replace text strings and images in existing PDF (e.g. business cards and other PDF templates)

[Stamp a PDF File](/android/get-started/samples.md#stamper) The sample shows how to use 'pdftron.PDF.Stamper' utility class to stamp PDF pages with text, images, or with other PDF pages.

[PDF logical structure reader](/android/get-started/samples.md#logicalstructure) This sample explores the structure and content of a tagged PDF document and dumps the structure information to the console window.

[PDF image extraction](/android/get-started/samples.md#imageextract) This sample illustrates couple of approaches to PDF image extraction.

[Read elements across all PDF pages](/android/get-started/samples.md#elementreader) Illustrates how to traverse page display list using ElementReader.

[Undo and/or redo](/android/get-started/samples.md#undoredotest) This sample demonstrates the basics of undoing and redoing changes to a document.

[Build, write, embed elements in PDF pages](/android/get-started/samples.md#elementbuilder) Illustrates how to use PDFNet page writing API, how to embed fonts and images and how to copy graphical elements from one page to another.

## UI samples

{% hint style="info" %}
Please note that **native code** is being used in the following showcase app(s). Apryse SDK for Xamarin provides the same features but the source code for the showcase application(s) is only available in native languages.
{% endhint %}

[Android showcase sample app](/android/samples/package-samples/sample-showcase.md) The showcase demonstrates some features of the SDK. To view the edit page content demo, select any of the samples found under `Edit & Manipulate` in the app such as:

* [Modify Page Labels](/android/samples/package-samples/sample-showcase.md)
* [Watermark](/android/samples/package-samples/sample-showcase.md)


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