tag to a tag and add the webp versions of the images * Based this code on code from the ShortPixel plugin, which used code from Responsify WP plugin */ use \WebPExpress\AlterHtmlHelper; use DOMUtilForWebP\PictureTags; class AlterHtmlPicture extends PictureTags { public function replaceUrl($url) { return AlterHtmlHelper::getWebPUrl($url, null); } }