WordPress Snippet (für functions.php oder Plugin). Werden zu den Standardgrössen zusätzliche Bildformate definiert, werden diese nicht im Media-Uploader angezeigt. Blogartikel: http://www.pixelstrol.ch/blog/2014/02/wp-snippet-alle-bildgroessen-im-medien-uploader-anzeigen/ Quellen: http://wp-snippets.com/show-custom-image-sizes-in-admin-media-upl…

wp_neue_bildformate_media_uploader.php

<?php
function show_image_sizes( $sizes ) {

    $new_sizes = array();
    $added_sizes = get_intermediate_image_sizes();
    // $added_sizes is an indexed array, therefore need to convert it
    // to associative array, using $value for $key and $value

    foreach( $added_sizes as $key => $value) {
        $new_sizes[$value] = $value;
    }
    
    // This preserves the labels in $sizes, and merges the two arrays
    $new_sizes = array_merge( $new_sizes, $sizes );
    return $new_sizes;
}
add_filter('image_size_names_choose', 'show_image_sizes', 11, 1);
?>