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Extensive Documentation for PowerPack & WooPack to help you with common questions and issues.


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  6. Custom Image Size is not working?

Custom Image Size is not working?

Solution: Please add the following code to your current theme’s functions.php file:

add_filter('image_size_names_choose', function($atts) {
    // Get an array of custom image sizes
    $allImageSizes = wp_get_additional_image_sizes();
    $imageSizes = [];

    // Loop through the custom images, make a suitable array
    foreach ($allImageSizes as $key => $value) {
        $imageSizes[$key] = $key;

    // Merge the new array with the existing, and return
    $atts = array_merge($atts, $imageSizes);
    return $atts;