sinnvolle Bitmap Komprimierung gesucht

public static Bitmap compressBitmap(Context ctx, Bitmap bmp){
        Bitmap editBmp = bmp;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();


        try {
            //Change Bmp x- or y-size smaller than 600
            while(editBmp.getWidth() > 600 || editBmp.getHeight() > 600){
                editBmp = Bitmap.createScaledBitmap(editBmp, editBmp.getWidth()/2, editBmp.getHeight()/2, false);
            }


            //compress without quality reduction to read bytesize
            editBmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
            byte[] imageInByte = baos.toByteArray();
            long lengthbmp = imageInByte.length / 1000; //dividing with 1000 for Kilobytes


            bmp = editBmp;
            int quality = 100;


            //reduce bmp bytesize with quality reduction
            while(lengthbmp >= 50) {
                if(quality <= 0){
                    break;
                }
                baos = new ByteArrayOutputStream();
                editBmp = bmp;
                quality -= 5;
                editBmp.compress(Bitmap.CompressFormat.JPEG, quality, baos);
                imageInByte = baos.toByteArray();
                lengthbmp = imageInByte.length / 1000; //dividing with 1000 for Kilobytes
            }
            //Toast.makeText(ctx, quality + "\n" + String.valueOf(lengthbmp) + " kb" + editBmp.getWidth() + "x" + editBmp.getHeight(), Toast.LENGTH_SHORT).show();


            return editBmp;


        } catch (Exception e) {
            //Toast.makeText(ctx, e.toString(), Toast.LENGTH_SHORT).show();
            return null;
        }
    }