Java - Convert PDF to JPG, PNG and SVG

Although PDF is a perfect document format, sometimes we still need to convert it to image format, because images can be displayed directly on most devices, while PDF needs a special reader. In this article, you’ll learn how to programmatically convert PDF to popular image formats like JPG, PNG and SVG by using Spire.PDF for Java.

• Convert PDF to JPG
• Convert PDF to Transparent PNG
• Convert PDF to SVG

If you create a Maven project, you can easily import the jar in your application using the following configurations. For non-Maven projects, download the jar file from this link and add it as a dependency in your application.

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId> e-iceblue</groupId>
        <artifactId>spire.pdf</artifactId>
        <verson>4.12.1</version>
    </dependency>
</dependencies>

import com.spire.pdf.PdfDocument;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ConvertPdfToJpg {

    public static void main(String[] args) throws Exception {

        //Create a PdfDocument object
        PdfDocument doc = new PdfDocument();

        //Load a sample PDF document
        doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pdf");

        //Declare a BufferedImage variable
        BufferedImage image;

        //Loop through the pages
        for (int i = 0; i < doc.getPages().getCount(); i++) {

            //Save the current page as a buffered image
            image = doc.saveAsImage(i);

            //Write the image data as a .jpg file
            File file = new File("C:\\Users\\Administrator\\Desktop\\Output\\" + String.format("ToImage-img-%d.jpg", i));
            ImageIO.write(image, "JPG", file);
        }
        doc.close();
    }
}

import com.spire.pdf.*;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;

public class ConvertPdfToTransparentPng {

    public static void main(String[] args) throws  Exception{

        //Create a PdfDocument object
        PdfDocument doc = new PdfDocument();

        //Load a sample PDF document
        doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pdf");

        //Specify the background transparent value of the converted image as 0
        doc.getConvertOptions().setPdfToImageOptions(0);

        //Declare a BufferedImage variable
        BufferedImage image;

        //Loop through the pages
        for (int i = 0; i < doc.getPages().getCount(); i++) {

            //Save the current page as a buffered image
            image = doc.saveAsImage(i);

            //Write the image data as a .png file
            File file = new File("C:\\Users\\Administrator\\Desktop\\Output\\" + String.format("ToImage-%d.png", i));
            ImageIO.write(image, "png", file);
        }
        doc.close();
    }
}

import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;

public class ConvertPdfToSvg {

    public static void main(String[] args) {

        //Create a PdfDocument object
        PdfDocument doc = new PdfDocument();

        //Load a sample PDF document
        doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pdf");

        //If you want the PDF document to be converted as a single SVG file, pass true to setOutputToOneSvg() method
        //doc.getConvertOptions().setOutputToOneSvg(true);

        //Save each page as an individual SVG file
        doc.saveToFile("C:\\Users\\Administrator\\Desktop\\Output\\ToSVG.svg", FileFormat.SVG);
        doc.close();
    }
}