furniture/app/Helper/Grafika/ImageType.php

<?php

namespace Grafika;

/**
 * Class ImageType. Represent the different image types for GD and Imagick consistently.
 *
 * @package Grafika
 */
class ImageType {

    const UNKNOWN = '';

    const GIF = 'GIF';

    const JPEG = 'JPEG';

    const PNG = 'PNG';

    const WBMP = 'WBMP';
}