Convert PDFs to images on Android

try {
    // Create a Uri for the PDF file.
    val uri = Uri.parse("path/to/file.pdf")

    // Instantiate a `Document` from the PDF file's URL.
    val document =  PdfDocumentLoader.openDocument(context, uri)

    val pageIndex = 0
    val pageImageSize = document.getPageSize(pageIndex).toRect()

    // Create the image
    val bitmap = document.renderPageToBitmap(
        context,
        pageIndex
        pageImageSize.width().toInt()
        pageImageSize.height().toInt()
    )
} catch(ex: Exception) {
    // Handle error.
}

try {
    // Create a Uri for the PDF file.
    final Uri uri = Uri.parse("path/to/file.pdf");

    // Instantiate a `Document` from the PDF file's URL.
    final PdfDocument document =  PdfDocumentLoader.openDocument(context, uri);

    final int pageIndex = 0;
    final RectF pageImageSize = document.getPageSize(pageIndex).toRect();

    //

    // Create the image.
    final Bitmap bitmap = document.renderPageToBitmap(
        context,
        pageIndex,
        (int)pageImageSize.width()
        (int)pageImageSize.height()
    );
} catch(final Exception exception) {
    // Handle error.
}