src/Uploadcare/File.php
public function getUrl($postfix = null)
    {
        $url = sprintf('%s%s', $this->api->getCdnUri(), $this->getPath($postfix));
        return $url;
    }
public function getUrl($postfix = null)
    {
        $url = sprintf('%s%s', $this->api->getCdnUri(), $this->getPath($postfix));
        return $url;
    }
Get URL of original image

@param string $postfix
@return string