Bitmap quality is too low even I m using ARGB_8888

[imvikasrai]

here is my code

public static Bitmap getImageFromPdf(Uri pdfUri, Context context) {
int pageNumber = 0;
PdfiumCore pdfiumCore = new PdfiumCore(context);

    try {
        ParcelFileDescriptor fd = context.getContentResolver().openFileDescriptor(pdfUri, "r");
        PdfDocument pdfDocument = pdfiumCore.newDocument(fd);
        pdfiumCore.openPage(pdfDocument, pageNumber);
        int width = pdfiumCore.getPageWidthPoint(pdfDocument, pageNumber);
        int height = pdfiumCore.getPageHeightPoint(pdfDocument, pageNumber);

       Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        pdfiumCore.renderPageBitmap(pdfDocument, bmp, pageNumber, 0, 0, width, height);

        // sendTitle(pdfiumCore, pdfDocument, listener1);
        pdfiumCore.closeDocument(pdfDocument); // important!
        return bmp;
    } catch (Throwable e) {
        e.printStackTrace();
        return null;
    }
}