PDF files are ideal for file sharing, and carry the assurance that the contents within the document will display correctly across devices without being altered. But, there are times where it’s favorable to convert a PDF document into individual image files. For instance, converting PDF to a JPG file allows you to decrease the overall size of the document. This means that it will be easier for you to transfer files to another person, upload them to a website, etc.
In this article, I am going to show you how to convert PDF to PNG, JPG, SVG, and TIFF files in Java using Spire.PDF for Java library.
- Convert PDF to PNG in Java
- Convert PDF to JPG in Java
- Convert PDF to SVG in Java
- Convert PDF to TIFF in Java
Add Spire.Pdf.jar as dependency
If you are working on a maven project, you can include the dependency in pom.xml file using this:
<repositories>
<repository>
<id>com.e-iceblue</id>
<name>e-iceblue</name>
<url>https://repo.e-iceblue.com/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.pdf</artifactId>
<version>8.11.0</version>
</dependency>
</dependencies>
If you are not using maven, then you can find the required jar files from the zip file available in this location. Include all the jar files into the application lib folder to run the sample code given in this tutorial.
Convert PDF to PNG in Java
A PNG file is an image saved in the Portable Network Graphic (PNG) format, commonly used to store web graphics, digital photographs, and images with transparent backgrounds. The following are the steps to convert a PDF document to multiple PNG image files using Spire.PDF for Java.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.loadFromFile() method.
- Make background of the generated image transparent by passing 0 to PdfDocument.getConvertOptions().setPdfToImageOptions() method.
- Traverse the pages in the document, and save a specific page as buffered image using PdfDocument.saveAsImage(pageIndex) method.
- Write the image data as a PNG file using ImageIO.write() method.
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");
//Make background transparent
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();
}
}
Convert PDF to JPG in Java
A JPG file is a raster image saved in the JPEG format, commonly used to store digital photographs and graphics created by image-editing software. The following are the steps to convert a PDF document to individual JPG files using Spire.PDF for Java.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.loadFromFile() method.
- Traverse the pages in the document, and save a specific page as buffered image using PdfDocument.saveAsImage(pageIndex) method.
- Write the image data as a JPG file using ImageIO.write() method.
import com.spire.pdf.PdfDocument;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
public class ConvertPdfToJpg {
public static void main(String[] args) throws IOException {
//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);
//Re-create a buffered image
BufferedImage newImg = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
newImg.getGraphics().drawImage(image, 0, 0, null);
//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(newImg, "JPG", file);
}
doc.close();
}
}
Convert PDF to SVG in Java
An SVG is a Scalable Vector Graphic. This means that the graphic can be scaled to any size without losing quality. The following are the steps to convert a PDF document to a single or several separate SVG files using Spire.PDF for Java.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.loadFromFile() method.
- Save each page as an individual SVG file using PdfDocument.saveToFile() method.
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();
}
}
Convert PDF to TIFF in Java
TIFF is a file type that it's best to use for high-quality images that need to be edited. TIFF files are large, so they’re not ideal for sharing online. Conversion from TIFF to PDF only needs 3 lines of code, as shown below.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.loadFromFile() method.
- Save the PDF file to TIFF using PdfDocument.saveToTiff() method.
import com.spire.pdf.PdfDocument;
public class ConvertPdfToTiff {
public static void main(String[] args) {
//Create a PdfDocument instance
PdfDocument pdf = new PdfDocument();
//Load a PDF document
pdf.loadFromFile("C:\\Users\\Administrator\\Desktop\\sample.pdf");
//Convert the entire PDF document to TIFF
pdf.saveToTiff("C:\\Users\\Administrator\\Desktop\\Output\\PDFtoTiff.tiff");
}
}
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