<dependency>

             <groupId>net.sf.cssbox</groupId>

             <artifactId>cssbox</artifactId>

             <version>4.12</version>

         </dependency>

package com.dx.project01;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.fit.cssbox.demo.ImageRenderer;

import org.xml.sax.SAXException;

/**

 * Hello world!

 */

public class App {

    public static void main(String[] args) throws IOException, SAXException {

        ImageRenderer render = new ImageRenderer();

        System.out.println("start...");

        String url = "https://mvnrepository.com/artifact/net.sf.cssbox/cssbox/4.12";

        FileOutputStream out = new FileOutputStream(new File("D:" + File.separator + "html.png"));

        render.renderURL(url, out, ImageRenderer.Type.PNG);

        out.close();

        System.out.println("OK");

    }

}