public String getPictureType(String path)
    {
        String type ="";
        try{
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            BitmapFactory.decodeFile(path,options);
            type = options.outMimeType;

        }catch(Exception e)
        {
           Log.e("TAG :getPictureType " ,e.getMessage()) ;
        }
        return type == null ? "":type;

    }

    public static void convertToJpg(String pngFilePath, String jpgFilePath) {

        Bitmap bitmap = BitmapFactory.decodeFile(pngFilePath);
        try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(jpgFilePath))) {
            if (bitmap.compress(Bitmap.CompressFormat.JPEG, 80, bos)) {
                bos.flush();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }