Bitmap image from android studio to jpeg in laravel

i am sending bitmap format from android studio and in code i am getting image in this format bitmap format, how do i convert it in to jpeg format and save it to my public folder.

$images = $request->input('expense_file'); //on echo (android.graphics.Bitmap@41c9d270)
 $binary  = base64_decode($images);
 file_put_contents(public_path().'/images/image.jpg', $binary);

via Chebli Mohamed