Java PDF to Image File

How Do I Convert an Existing PDF Document to Images?

This example converts an entire PDF document into images. Write the following code and run the program. For more PDF to image conversion examples, visit our rasterization code examples.

import com.ironsoftware.ironpdf.PdfDocument;
import com.ironsoftware.ironpdf.edit.PageSelection;
import com.ironsoftware.ironpdf.image.ToImageOptions;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;
import java.util.List;

public class Main {
    public static void main(String [] args) throws IOException {
        // Load the PDF document from a file
        PdfDocument instance = PdfDocument.fromFile(Paths.get("business_plan.pdf"));

        // Convert the PDF pages into a list of BufferedImage objects
        List<BufferedImage> extractedImages = instance.toBufferedImages();

        // Set image conversion options
        ToImageOptions rasterOptions = new ToImageOptions();
        rasterOptions.setImageMaxHeight(800);
        rasterOptions.setImageMaxWidth(500);

        // Convert the pages using the specified options
        List<BufferedImage> sizedExtractedImages = instance.toBufferedImages(rasterOptions, PageSelection.allPages());

        int pageIndex = 1;
        // Loop through each image and write to the file system
        for (BufferedImage extractedImage : sizedExtractedImages) {
            String fileName = "assets/images/" + pageIndex++ + ".png";
            ImageIO.write(extractedImage, "PNG", new File(fileName));
        }
    }
}

import com.ironsoftware.ironpdf.PdfDocument;
import com.ironsoftware.ironpdf.edit.PageSelection;
import com.ironsoftware.ironpdf.image.ToImageOptions;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;
import java.util.List;

public class Main {
    public static void main(String [] args) throws IOException {
        // Load the PDF document from a file
        PdfDocument instance = PdfDocument.fromFile(Paths.get("business_plan.pdf"));

        // Convert the PDF pages into a list of BufferedImage objects
        List<BufferedImage> extractedImages = instance.toBufferedImages();

        // Set image conversion options
        ToImageOptions rasterOptions = new ToImageOptions();
        rasterOptions.setImageMaxHeight(800);
        rasterOptions.setImageMaxWidth(500);

        // Convert the pages using the specified options
        List<BufferedImage> sizedExtractedImages = instance.toBufferedImages(rasterOptions, PageSelection.allPages());

        int pageIndex = 1;
        // Loop through each image and write to the file system
        for (BufferedImage extractedImage : sizedExtractedImages) {
            String fileName = "assets/images/" + pageIndex++ + ".png";
            ImageIO.write(extractedImage, "PNG", new File(fileName));
        }
    }
}

The output saves to your project's assets folder (create this folder before running the program) with numbering starting from 1 and incrementing for each PDF page. Apply advanced features like compressing images or adding watermarks to output files.

PDF to Images Output

How Do I Convert a URL to PDF and Then to Images?

IronPDF converts HTML to PDF directly, then converts each page of the generated PDF to images. This feature allows you to capture web content as images, useful for archiving web pages, creating screenshots for documentation, or generating visual reports from web-based dashboards.

This example uses the Amazon website. The program renders an Amazon.com page into a PDF, then outputs each PDF page as images stored in an assets folder. For secure pages requiring authentication, see our guide on website and system logins.

import com.ironsoftware.ironpdf.PdfDocument;
import com.ironsoftware.ironpdf.edit.PageSelection;
import com.ironsoftware.ironpdf.image.ToImageOptions;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.List;

public class Main {
    public static void main(String [] args) throws IOException {
        // Generate a PDF from a URL
        PdfDocument pdf = PdfDocument.renderUrlAsPdf("https://www.amazon.com/?tag=hp2-brobookmark-us-20");

        // Convert the PDF pages into a list of BufferedImage objects
        List<BufferedImage> extractedImages = pdf.toBufferedImages();

        // Set image conversion options
        ToImageOptions rasterOptions = new ToImageOptions();
        rasterOptions.setImageMaxHeight(800);
        rasterOptions.setImageMaxWidth(500);

        // Convert the pages using the specified options
        List<BufferedImage> sizedExtractedImages = pdf.toBufferedImages(rasterOptions, PageSelection.allPages());

        int pageIndex = 1;
        // Loop through each image and write to the file system
        for (BufferedImage extractedImage : sizedExtractedImages) {
            String fileName = "assets/images/" + pageIndex++ + ".png";
            ImageIO.write(extractedImage, "PNG", new File(fileName));
        }
    }
}

import com.ironsoftware.ironpdf.PdfDocument;
import com.ironsoftware.ironpdf.edit.PageSelection;
import com.ironsoftware.ironpdf.image.ToImageOptions;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.List;

public class Main {
    public static void main(String [] args) throws IOException {
        // Generate a PDF from a URL
        PdfDocument pdf = PdfDocument.renderUrlAsPdf("https://www.amazon.com/?tag=hp2-brobookmark-us-20");

        // Convert the PDF pages into a list of BufferedImage objects
        List<BufferedImage> extractedImages = pdf.toBufferedImages();

        // Set image conversion options
        ToImageOptions rasterOptions = new ToImageOptions();
        rasterOptions.setImageMaxHeight(800);
        rasterOptions.setImageMaxWidth(500);

        // Convert the pages using the specified options
        List<BufferedImage> sizedExtractedImages = pdf.toBufferedImages(rasterOptions, PageSelection.allPages());

        int pageIndex = 1;
        // Loop through each image and write to the file system
        for (BufferedImage extractedImage : sizedExtractedImages) {
            String fileName = "assets/images/" + pageIndex++ + ".png";
            ImageIO.write(extractedImage, "PNG", new File(fileName));
        }
    }
}

PDF to Images Output

Adjust image resolution by modifying these calls on the ToImageOptions instance:

rasterOptions.setImageMaxHeight(800);
rasterOptions.setImageMaxWidth(500);

rasterOptions.setImageMaxHeight(800);
rasterOptions.setImageMaxWidth(500);

These lines adjust the width and height of generated images when toBufferedImage is invoked. For advanced rendering options and settings, consult our guide on PDF generation settings.

Converting Specific Pages to Images

Sometimes you only need specific pages rather than the entire document. IronPDF provides flexible page selection options:

// Convert only page 3 to an image
List<BufferedImage> singlePage = instance.toBufferedImages(rasterOptions, PageSelection.singlePage(3));

// Convert pages 2 through 5
List<BufferedImage> pageRange = instance.toBufferedImages(rasterOptions, PageSelection.pageRange(2, 5));

// Convert first and last pages only
PageSelection customPages = new PageSelection();
customPages.add(0); // First page (0-indexed)
customPages.add(instance.getPageCount() - 1); // Last page
List<BufferedImage> selectedPages = instance.toBufferedImages(rasterOptions, customPages);

// Convert only page 3 to an image
List<BufferedImage> singlePage = instance.toBufferedImages(rasterOptions, PageSelection.singlePage(3));

// Convert pages 2 through 5
List<BufferedImage> pageRange = instance.toBufferedImages(rasterOptions, PageSelection.pageRange(2, 5));

// Convert first and last pages only
PageSelection customPages = new PageSelection();
customPages.add(0); // First page (0-indexed)
customPages.add(instance.getPageCount() - 1); // Last page
List<BufferedImage> selectedPages = instance.toBufferedImages(rasterOptions, customPages);