How to duplicate a page in PDF using Java

This article will introduce two methods to duplicate a page in PDF using Java programmatically.

•         Duplicate a page in a PDF file to another PDF file
•       Duplicate a page to other pages in the same PDF file

Test environment I used:

·    Intellij Idea2019.1

·    JDK 1.8.0

·    Spire.Pdf.jar

Add Spire.Pdf.jar to your project as a dependency

Method 1: Download the Free Spire.PDF for Java zip from the link, unzip it and find Spire.Pdf.jar in the “lib” folder. Finally add Spire.Pdf.jar to IDEA as a dependency.

Method 2: Create a Maven project, and specify e-iceblue Maven Repository configuration and define Spire.PDF for Java API dependency in your pom.xml as follows.

<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.free</artifactId>

        <version>2.0.0</version>

    </dependency>

</dependencies>

Finally, you only need to click “Import Changes” to import the Spire.PDF jars.

Using the code

Duplicate a page in a PDF file to another PDF file

The following code snippets are used to achieve the purpose that duplicating the first page of Sample 1 to the front of Sample 2. Specific steps are listed below.

Step 1: Load two sample PDF files using the PdfDocument instance.

Step 2: Get the first page of Sample 1 and its size using getPages() and getSize() methods.

Step 3: Create a template based on the page and insert it to the front of Sample 2.

Step 4: Using the saveToFile method to save the Sample 2.

import com.spire.pdf.*;
import com.spire.pdf.graphics.PdfMargins;
import com.spire.pdf.graphics.PdfTemplate;
import java.awt.*;
import java.awt.geom.Dimension2D;

public class DuplicatePage1 {
    public static void main(String[] args) {
        //Load two sample PDF documents
        PdfDocument pdf1 = new PdfDocument("C:\\Users\\Test1\\Desktop\\Sample1.pdf");
        PdfDocument pdf2 = new PdfDocument("C:\\Users\\Test1\\Desktop\\Sample2.pdf");

        //Get the first page of Sample1 document
        PdfPageBase page = pdf1.getPages().get(0);
        //Get the page size
        Dimension2D size = page.getSize();
        //Create an template based on the page
        PdfTemplate template = page.createTemplate();

        //Insert the template to the first page of Sample2
        pdf2.getPages().insert(0,size,new PdfMargins(0,0));
        pdf2.getPages().get(0).getCanvas().drawTemplate(template,new Point(0,0));

        //Save to Sample2 document
        pdf2.saveToFile("output/result1.pdf",FileFormat.PDF);
        pdf2.dispose();
    }
}

Output

Duplicate a page to other pages in the same PDF file

Free Spire.PDF for Java also supports duplicating a page to other pages in the same PDF file. The tutorial below is to duplicate the first page in a PDF file to the front and end of the file.

import com.spire.pdf.*;
import com.spire.pdf.graphics.PdfMargins;
import com.spire.pdf.graphics.PdfTemplate;
import java.awt.*;
import java.awt.geom.Dimension2D;

public class DuplicatePage2 {

    public static void main(String[] args) {

        //Load a Sample PDF document

        PdfDocument pdf = new PdfDocument("C:\\Users\\Test1\\Desktop\\Sample2.pdf");

        //Get the first page

        PdfPageBase page = pdf.getPages().get(0);

        //Get the page size

        Dimension2D size = page.getSize();

        //Create a template based on the page

        PdfTemplate template = page.createTemplate();

        //Insert two templates cyclically to the end of the sample document

        for(int i=0; i<2; i++){

            page = pdf.getPages().add(size, new PdfMargins(0));//Add a new page to the document

            page.getCanvas().drawTemplate(template, new Point(0, 0));//Draw template on the new page

        }

        //Insert one template to the front of the sample document

        pdf.getPages().insert(0,size,new PdfMargins(0,0));//Add a new page to the document

        pdf.getPages().get(0).getCanvas().drawTemplate(template,new Point(0,0));//Draw template on the new page

        //Save the PDF file

        pdf.saveToFile("output/result2.pdf",FileFormat.PDF);

    }

} 

Output