> 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/optimization/samples.md).

# Code samples to optimize & compress PDFs in Android

Compress & optimize PDF files using the latest image compression technology. Learn how to reduce file size and improve efficiency with JBIG2 compression. Check out the Android showcase sample app for

[Compress & optimize PDF files](/android/get-started/samples.md#optimizer) The sample shows how to use 'pdftron.PDF.Optimizer' to reduce PDF file size by removing redundant information and compressing data streams using the latest in image compression technology.

[PDF image JBIG2 compression](/android/get-started/samples.md#jbigtest) The sample project illustrates how to recompress bitonal (black and white) images in existing PDF documents using JBIG2 compression. The sample is intended to show how to specify hint information for image encoder and is not meant to be a generic PDF optimization tool.

## 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 optimization demo, select `Optimizer` found under `Advanced` in the app.


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