Rasterize a PDF to Images

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;

PdfDocument pdf = PdfDocument.fromFile(Paths.get("assets/composite.pdf"));

// Extract all the pages from the PDF file.
List<BufferedImage> extractedImages = pdf.toBufferedImages();

// With the ToImageOptions object, specify maximum image dimensions for each
// extracted image, as well as their DPI
ToImageOptions rasterOptions = new ToImageOptions();
rasterOptions.setImageMaxHeight(100);
rasterOptions.setImageMaxWidth(100);

// Call the toBufferedImage method along with a PageSelection object to choose the pages from which to
// extract the images
//
// Available PageSelection methods include: allPages, lastPage, firstPage, singlePage(int pageIndex),
// and pageRange(int startingPage, int endingPage)
List<BufferedImage> sizedExtractedImages = pdf.toBufferedImages(rasterOptions, PageSelection.allPages());

// Save all the extracted images to a file location
int i = 1;
for (BufferedImage extractedImage : sizedExtractedImages) {
    String fileName = "assets/images/" + i++ + ".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

Dim pdf As PdfDocument = PdfDocument.fromFile(Paths.get("assets/composite.pdf"))

' Extract all the pages from the PDF file.
Dim extractedImages As List(Of BufferedImage) = pdf.toBufferedImages()

' With the ToImageOptions object, specify maximum image dimensions for each
' extracted image, as well as their DPI
Dim rasterOptions As New ToImageOptions()
rasterOptions.setImageMaxHeight(100)
rasterOptions.setImageMaxWidth(100)

' Call the toBufferedImage method along with a PageSelection object to choose the pages from which to
' extract the images
'
' Available PageSelection methods include: allPages, lastPage, firstPage, singlePage(int pageIndex),
' and pageRange(int startingPage, int endingPage)
Dim sizedExtractedImages As List(Of BufferedImage) = pdf.toBufferedImages(rasterOptions, PageSelection.allPages())

' Save all the extracted images to a file location
Dim i As Integer = 1
Do
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: String fileName = "assets/images/" + i++ + ".png";
	Dim fileName As String = "assets/images/" & i & ".png"
	i += 1
	ImageIO.write(extractedImage, "PNG", New File(fileName))
Loop

Rasterize a PDF to Images

Once loaded from a file, converted from source content (webpages, URLs, HTML, etc...), or modified with margins, headers, footers, or other customizations, IronPDF can export pages of PDF documents into images that can be saved to a file system, stored in a database or sent over networks (among other uses).

The toBufferedImages method returns a List containing a collection of BufferedImage objects. Each BufferedImage contains the image byte content for a single page of the original PdfDocument. Moreover, the BufferedImage list is arranged in ascending order by page number. Developers can include a PageSelection object as an argument in the method call to generate this list for an inclusive set of pages in the PDF.

The featured code example creates a ToImageOptions object to set the expected width and height of the images post-conversion. This class also includes a method for changing the DPI of the image output (setDpi). The developer can pair together instances of this class along with that of the PageSelection to control the scope, size, and quality of PDF-to-Image conversion simultaneously.