Android PdfViewer depends on PdfiumAndroid, which is set of native libraries (almost 16 MB) for many architectures.

Apk must contain all this libraries to run on every device available on market.

Fortunately, Google Play allows us to upload multiple apks, e.g. one per every architecture.

There is good article on automatically splitting your application into multiple apks,

available [here](http://ph0b.com/android-studio-gradle-and-ndk-integration/).

Most important section is _Improving multiple APKs creation and versionCode handling with APK Splits_, but whole article is worth reading.

You only need to do this in your application, no need for forking PdfiumAndroid or so.

If you have any suggestions on making this lib better, write me, create issue or write some code and send pull request.