number of file in media

wp-nfm

/*
Count total number of jpg, gif, png images in media library

Adding the first snippet to the functions.php of your wordpress theme will display a count of all images within the media library. Add the second snippet in the location you wish to display the count total.
use this : <?php img_count(); ?>
*/
function img_count(){
        $query_img_args = array(
                'post_type' => 'attachment',
                'post_mime_type' =>array(
                                'jpg|jpeg|jpe' => 'image/jpeg',
                                'gif' => 'image/gif',
                                'png' => 'image/png',
                                ),
                'post_status' => 'inherit',
                'posts_per_page' => -1,
                );
        $query_img = new WP_Query( $query_img_args );
        echo $query_img->post_count;
}