Set Campaign Thumbnail Size

/**

 * If you want all campaign thumbnails to have the same size, you can use the

 * snippet below. Note that images will be hard-cropped, so part of the image

 * may be cropped out.

 *

 * If you have already upload photos to your site, adding the script below

 * will not automatically work. You may also need to regenerate all the thumbnails

 * for the images on your site. For that, use the following plugin:

 *

 * https://wordpress.org/plugins/regenerate-thumbnails/

 */

/**

 * Register the new image size.

 *

 * @see     https://developer.wordpress.org/reference/functions/add_image_size/

 */

function ed_charitable_add_campaign_image_size() {

    add_image_size(

        'campaign-thumbnail', // name

        300, // width

        300, // height

        true // crop

    );

}

add_action( 'after_setup_theme', 'ed_charitable_add_campaign_image_size' );

/**

 * Set the campaign loop to use the 'campaign-thumbnail' image size we registered.

 *

 * @param   string $size

 * @return  string

 */

function ed_charitable_set_campaign_loop_image_size( $size ) {

    return 'campaign-thumbnail';

}

add_filter( 'charitable_campaign_loop_thumbnail_size', 'ed_charitable_set_campaign_loop_image_size' );