HTML to PDF Java Examples

This page contains various examples of using the HTML to PDF API in Java. The examples are complete and fully functional. Read more about how to convert HTML to PDF in Java.

Basic examples
Advanced examples
Template rendering examples
Spring examples

Basic examples

Webpage to PDF file

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "example.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Webpage to in-memory PDF

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertUrl("http://www.example.com");

            // at this point the "pdf" variable contains PDF raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
    }
}

Webpage to PDF stream

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // create an output stream for the conversion result
            FileOutputStream outputStream = new FileOutputStream("example.pdf");

            // run the conversion and write the result into the output stream
            client.convertUrlToStream("http://www.example.com", outputStream);

            // close the output stream
            outputStream.close();
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

HTML file to PDF file

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and write the result to a file
            client.convertFileToFile("/path/to/MyLayout.html", "MyLayout.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

HTML file to in-memory PDF

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertFile("/path/to/MyLayout.html");

            // at this point the "pdf" variable contains PDF raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
    }
}

HTML file to PDF stream

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // create an output stream for the conversion result
            FileOutputStream outputStream = new FileOutputStream("MyLayout.pdf");

            // run the conversion and write the result into the output stream
            client.convertFileToStream("/path/to/MyLayout.html", outputStream);

            // close the output stream
            outputStream.close();
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

HTML string to PDF file

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and write the result to a file
            client.convertStringToFile("<html><body><h1>Hello World!</h1></body></html>", "HelloWorld.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

HTML string to in-memory PDF

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertString("<html><body><h1>Hello World!</h1></body></html>");

            // at this point the "pdf" variable contains PDF raw data and
            // can be sent in an HTTP response, saved to a file, etc.
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
    }
}

HTML string to PDF stream

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // create an output stream for the conversion result
            FileOutputStream outputStream = new FileOutputStream("HelloWorld.pdf");

            // run the conversion and write the result into the output stream
            client.convertStringToStream("<html><body><h1>Hello World!</h1></body></html>", outputStream);

            // close the output stream
            outputStream.close();
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Get info about the current conversion

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setDebugLog(true);

            // run the conversion and write the result to a file
            client.convertFileToFile("/path/to/MyLayout.html", "MyLayout.pdf");
            
            // print URL of the debug log
            System.out.println("Debug log url: " + client.getDebugLogUrl());
            
            // print the number of conversion credits remaining in your account
            System.out.println("Remaining credit count: " + client.getRemainingCreditCount());
            
            // print the number of credits used for the conversion
            System.out.println("Consumed credit count: " + client.getConsumedCreditCount());
            
            // print the unique identifier for the conversion
            System.out.println("Job id: " + client.getJobId());
            
            // print total number of pages in the output document
            System.out.println("Page count: " + client.getPageCount());
            
            // print size of the output data in bytes
            System.out.println("Output size: " + client.getOutputSize());
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Advanced examples

Customize the page size and the orientation

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setPageSize("Letter");
            client.setOrientation("landscape");
            client.setNoMargins(true);

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "letter_landscape.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Put the source URL in the header and the page number in the footer

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setHeaderHeight("15mm");
            client.setFooterHeight("10mm");
            client.setHeaderHtml("<a class='pdfcrowd-source-url' data-pdfcrowd-placement='href-and-content'></a>");
            client.setFooterHtml("<center><span class='pdfcrowd-page-number'></span></center>");
            client.setMarginTop("0");
            client.setMarginBottom("0");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "header_footer.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create fillable PDF form

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setEnablePdfForms(true);

            // run the conversion and write the result to a file
            client.convertStringToFile("<html><body>Enter name:<input type=text></body></html>", "form.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Zoom the HTML document

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setScaleFactor(300);

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "zoom_300.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Set PDF metadata

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setAuthor("Pdfcrowd");
            client.setTitle("Hello World");
            client.setSubject("Demo");
            client.setKeywords("Pdfcrowd,demo");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "with_metadata.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create a Powerpoint like presentation from an HTML document

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setPageLayout("single-page");
            client.setPageMode("full-screen");
            client.setInitialZoomType("fit-page");
            client.setOrientation("landscape");
            client.setNoMargins(true);

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://pdfcrowd.com/api/", "slide_show.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Convert an HTML document section

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setElementToConvert("#main");

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://pdfcrowd.com/api/", "html_part.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Inject an HTML code

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setCustomJavascript("el=document.createElement('h2'); el.textContent='Hello from Pdfcrowd API'; el.style.color='red'; el_before=document.getElementsByTagName('h1')[0]; el_before.parentNode.insertBefore(el, el_before.nextSibling)");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "html_inject.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Convert a responsive web page as it appears on a large device

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setContentViewportWidth("large");
            client.setNoMargins(true);

            // run the conversion and write the result to a file
            client.convertUrlToFile("https://getbootstrap.com/", "bootstrap.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create an in-memory archive (ZIP) and convert it

import com.pdfcrowd.*;
import java.io.*;
import java.util.*;
import java.util.zip.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // prepare map of local assets
            HashMap<String, File> srcFiles = new HashMap<String, File>();
            srcFiles.put("fonts/OpenSans.ttf", new File("/your-path-to/fonts/OpenSans.ttf"));
            srcFiles.put("images/logo.png", new File("/your-path-to/images/logo.png"));

            // create ZIP archive
            Pdfcrowd.ByteArrayIOStream inStream = new Pdfcrowd.ByteArrayIOStream();
            ZipOutputStream zipOut = new ZipOutputStream(inStream.getOutputStream());

            // add HTML content to the archive
            ZipEntry htmlEntry = new ZipEntry("index.html");
            zipOut.putNextEntry(htmlEntry);
            StringBuilder sb = new StringBuilder();
            sb.append("<html>");
            sb.append("    <head>");
            sb.append("        <style>");
            sb.append("         @font-face");
            sb.append("         {");
            sb.append("             font-family: 'OpenSans';");
            sb.append("             src: url(fonts/OpenSans.ttf) format('truetype');");
            sb.append("         }");
            sb.append("");
            sb.append("         h1");
            sb.append("         {");
            sb.append("             font-family: OpenSans;");
            sb.append("         }");
            sb.append("        </style>");
            sb.append("    </head>");
            sb.append("    <body>");
            sb.append("        <h1>Hello World</h1>");
            sb.append("        <img src='images/logo.png'>");
            sb.append("    </body>");
            sb.append("</html>");
            byte[] htmlBytes = sb.toString().getBytes();
            zipOut.write(htmlBytes, 0, htmlBytes.length);

            // add required local files to the archive
            for(Map.Entry<String, File> entry : srcFiles.entrySet()) {
                FileInputStream fis = new FileInputStream(entry.getValue());
                ZipEntry zipEntry = new ZipEntry(entry.getKey());
                zipOut.putNextEntry(zipEntry);

                byte[] bytes = new byte[1024];
                int length;
                while((length = fis.read(bytes)) != -1) {
                    zipOut.write(bytes, 0, length);
                }
                fis.close();
            }

            zipOut.close();

            // create an output stream for the conversion result
            FileOutputStream outputStream = new FileOutputStream("HelloFromZip.pdf");

            // run the conversion and write the result into the output stream
            client.convertStreamToStream(inStream, outputStream);

            // close the output stream
            outputStream.close();
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Renderer debugging - highlight HTML elements

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setCustomJavascript("libPdfcrowd.highlightHtmlElements({backgroundColor: 'rgba(255, 191, 0, 0.1)', borderColor:null})");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "highlight_background.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Renderer debugging - borders with spacing around HTML elements

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setCustomJavascript("libPdfcrowd.highlightHtmlElements({borderColor: 'orange', backgroundColor: null, padding: '4px', margin: '4px'})");

            // run the conversion and write the result to a file
            client.convertUrlToFile("http://www.example.com", "highlight_borders.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Template rendering examples

Create PDF from JSON data

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setDataString("{\n" +
                "    \"name\": \"World\",\n" +
                "    \"product\": \"Pdfcrowd API\"\n" +
                "}");

            // run the conversion and write the result to a file
            client.convertStringToFile("Hello {{ name }} from {{ product }}", "output.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create PDF from XML data

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setDataString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
                "<data>\n" +
                "  <name>World</name>\n" +
                "  <product>Pdfcrowd API</product>\n" +
                "</data>");

            // run the conversion and write the result to a file
            client.convertStringToFile("Hello {{ data.name }} from {{ data.product }}", "output.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create PDF from YAML data

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setDataString("name: World\n" +
                "product: Pdfcrowd API");

            // run the conversion and write the result to a file
            client.convertStringToFile("Hello {{ name }} from {{ product }}", "output.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Create PDF from CSV data

import com.pdfcrowd.*;
import java.io.*;

public class ApiTest {
    public static void main(String[] args) throws IOException, Pdfcrowd.Error {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // configure the conversion
            client.setDataString("name,product\n" +
                "World,Pdfcrowd API");

            // run the conversion and write the result to a file
            client.convertStringToFile("Hello {{ name }} from {{ product }}", "output.pdf");
        }
        catch(Pdfcrowd.Error why) {
            System.err.println("Pdfcrowd Error: " + why);
            throw why;
        }
        catch(IOException why) {
            System.err.println("IO Error: " + why);
            throw why;
        }
    }
}

Spring examples

Webpage to PDF in Spring

import java.net.URLEncoder;
import java.io.UnsupportedEncodingException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.http.ResponseEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import com.pdfcrowd.*;

@Controller
public class DemoController {
    // the recommended method is POST
    @PostMapping("/")
    public ResponseEntity<byte[]> convert() throws UnsupportedEncodingException {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertUrl("http://www.example.com");

            // set HTTP response headers
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "application/pdf");
            headers.add("Cache-Control", "max-age=0");
            headers.add("Accept-Ranges", "none");
            headers.add("Content-Disposition", "attachment; filename*=UTF-8''" +
                        URLEncoder.encode("example.pdf", "UTF-8").replace("+", "%20"));

            // send the result in the HTTP response
            return new ResponseEntity<>(pdf, headers, HttpStatus.OK);
        }
        catch(Pdfcrowd.Error why) {
            // send the error in the HTTP response
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "text/plain");
            String msg = String.format("Pdfcrowd Error: %d - %s",
                                       why.getCode(), why.getMessage());
            return new ResponseEntity<>(msg.getBytes(), headers, HttpStatus.BAD_REQUEST);
        }
    }
}

HTML file to PDF in Spring

import java.net.URLEncoder;
import java.io.UnsupportedEncodingException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.http.ResponseEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import com.pdfcrowd.*;

@Controller
public class DemoController {
    // the recommended method is POST
    @PostMapping("/")
    public ResponseEntity<byte[]> convert() throws UnsupportedEncodingException {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertFile("/path/to/MyLayout.html");

            // set HTTP response headers
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "application/pdf");
            headers.add("Cache-Control", "max-age=0");
            headers.add("Accept-Ranges", "none");
            headers.add("Content-Disposition", "attachment; filename*=UTF-8''" +
                        URLEncoder.encode("MyLayout.pdf", "UTF-8").replace("+", "%20"));

            // send the result in the HTTP response
            return new ResponseEntity<>(pdf, headers, HttpStatus.OK);
        }
        catch(Pdfcrowd.Error why) {
            // send the error in the HTTP response
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "text/plain");
            String msg = String.format("Pdfcrowd Error: %d - %s",
                                       why.getCode(), why.getMessage());
            return new ResponseEntity<>(msg.getBytes(), headers, HttpStatus.BAD_REQUEST);
        }
    }
}

HTML string to PDF in Spring

import java.net.URLEncoder;
import java.io.UnsupportedEncodingException;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.http.ResponseEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import com.pdfcrowd.*;

@Controller
public class DemoController {
    // the recommended method is POST
    @PostMapping("/")
    public ResponseEntity<byte[]> convert() throws UnsupportedEncodingException {
        try {
            // create the API client instance
            Pdfcrowd.HtmlToPdfClient client =
                new Pdfcrowd.HtmlToPdfClient("demo", "ce544b6ea52a5621fb9d55f8b542d14d");

            // run the conversion and store the result into the "pdf" variable
            byte[] pdf = client.convertString("<html><body><h1>Hello World!</h1></body></html>");

            // set HTTP response headers
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "application/pdf");
            headers.add("Cache-Control", "max-age=0");
            headers.add("Accept-Ranges", "none");
            headers.add("Content-Disposition", "attachment; filename*=UTF-8''" +
                        URLEncoder.encode("HelloWorld.pdf", "UTF-8").replace("+", "%20"));

            // send the result in the HTTP response
            return new ResponseEntity<>(pdf, headers, HttpStatus.OK);
        }
        catch(Pdfcrowd.Error why) {
            // send the error in the HTTP response
            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Type", "text/plain");
            String msg = String.format("Pdfcrowd Error: %d - %s",
                                       why.getCode(), why.getMessage());
            return new ResponseEntity<>(msg.getBytes(), headers, HttpStatus.BAD_REQUEST);
        }
    }
}