class Images {

    /**
     * Qiniu image processing.
     *
     * @param content the specified article content
     * @return processed content
     */
    public static String qiniuImgProcessing(final String content) {<FILL_FUNCTION_BODY>}

    /**
     * Private constructor.
     */
    private Images() {
    }
}

        String ret = content;

        if (!Symphonys.QN_ENABLED) {
            return ret;
        }

        final String qiniuDomain = Symphonys.UPLOAD_QINIU_DOMAIN;
        final String html = Markdowns.toHTML(content);

        final String[] imgSrcs = StringUtils.substringsBetween(html, "<img src=\"", "\"");
        if (null == imgSrcs) {
            return ret;
        }

        for (final String imgSrc : imgSrcs) {
            if (!StringUtils.startsWith(imgSrc, qiniuDomain) || StringUtils.contains(imgSrc, ".gif")
                    || StringUtils.containsIgnoreCase(imgSrc, "?imageView2")) {
                continue;
            }

            ret = StringUtils.replace(ret, imgSrc, imgSrc + "?imageView2/2/w/768/format/webp/interlace/1");
        }

        return ret;
    
<no_super_class>