WordPress gallery default values filter

wordpress-gallery-defaults.php

<?php

// See more in wp-includes/js/media-editor.js
// wp.media._galleryDefaults
// and wp-includes/media.php

add_filter( 'media_view_settings', function( $settings, $post ) {
    $settings['galleryDefaults'] = array(
        itemtag    => 'dl',
        icontag    => 'dt',
        captiontag => 'dd',
        columns    => '3',
        link       => 'post', // possible values: post, file, none
        size       => 'thumbnail',
        order      => 'ASC',
        orderby    => 'menu_order ID',
    );

    return $settings;
}, 10, 2 );