Code based on Custom Sortable Columns

add_filter(\'manage_upload_columns\', \'size_column_register\');

function size_column_register($columns) {

    $columns[\'dimensions\'] = \'Dimensions\';

    return $columns;
}

add_action(\'manage_media_custom_column\', \'size_column_display\', 10, 2);

function size_column_display($column_name, $post_id) {

    if( \'dimensions\' != $column_name || !wp_attachment_is_image($post_id)) return;

    list($url, $width, $height) = wp_get_attachment_image_src($post_id, \'full\');

    echo esc_html("{$width}×{$height}");
}

谢谢，我已经找了一会儿了。

和尺寸（表示重量）

add_filter( \'manage_media_columns\', \'sk_media_columns_filesize\' );
/**
 * Filter the Media list table columns to add a File Size column.
 *
 * @param array $posts_columns Existing array of columns displayed in the Media list table.
 * @return array Amended array of columns to be displayed in the Media list table.
 */
function sk_media_columns_filesize( $posts_columns ) {
    $posts_columns[\'filesize\'] = __( \'File Size\', \'my-theme-text-domain\' );

    return $posts_columns;
}

add_action( \'manage_media_custom_column\', \'sk_media_custom_column_filesize\', 10, 2 );
/**
 * Display File Size custom column in the Media list table.
 *
 * @param string $column_name Name of the custom column.
 * @param int    $post_id Current Attachment ID.
 */
function sk_media_custom_column_filesize( $column_name, $post_id ) {
    if ( \'filesize\' !== $column_name ) {
        return;
    }

    $bytes = filesize( get_attached_file( $post_id ) );

    echo size_format( $bytes, 2 );
}

add_action( \'admin_print_styles-upload.php\', \'sk_filesize_column_filesize\' );
/**
 * Adjust File Size column on Media Library page in WP admin
 */
function sk_filesize_column_filesize() {
    echo
    \'<style>
        .fixed .column-filesize {
            width: 10%;
        }
    </style>\';
}