public function getFastlyUrl()
    {
        $baseFile = $this->getBaseFile();
        $url = $this->getBaseFileUrl($baseFile);

        $imageQuality = $this->_scopeConfig->getValue(Config::XML_FASTLY_IMAGE_OPTIMIZATION_IMAGE_QUALITY);

        $this->setQuality($imageQuality);

        $this->fastlyParameters['quality'] = $this->_quality;

        if ($this->_scopeConfig->isSetFlag(Config::XML_FASTLY_IMAGE_OPTIMIZATION_BG_COLOR) == true) {
            $this->fastlyParameters['bg-color'] = implode(',', $this->_backgroundColor);
        }
        if ($this->_keepAspectRatio == true) {
            $this->fastlyParameters['fit'] = 'bounds';
        }
        $this->fastlyUrl = $url . '?' . $this->compileFastlyParameters();
    }