iText pdf library

Installation: iText 7 Core is available via Maven on The Central repository. If you need all iText 7 modules, then you don't need to add the individual modules and you can just add this XML snippet in your pom.xml. Maven will then do all the heavy lifting for you and download the required modules from The Central Repository. Simply add iText 7 as a dependency to your pom.xml:

	<properties>
    <itext.version>RELEASE</itext.version>
</properties>
<dependencies>
    <!-- add all iText 7 modules -->
    <dependency>
       <groupId>com.itextpdf</groupId>
       <artifactId>itext7-core</artifactId>
       <version>${itext.version}</version>
       <type>pom</type>
    </dependency>
</dependencies>

NOTE: We use "RELEASE" as the iText version in this installation, which will ensure you install the current release versions of the iText 7 modules. If your project requires a specific version of iText 7 to function correctly, ensure you replace this with your desired version number in your pom.xml.

Learn more

Create booklet from A4 document

This example was written in response to questions such as:

MakeA3Booklet.java

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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * Example written by Bruno Lowagie in answer to a question on StackOverflow:
 * http://stackoverflow.com/questions/34019298
 */
package com.itextpdf.samples.sandbox.merge;
 
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
 
import java.io.File;
import java.io.IOException;
 
public class MakeA3Booklet {
    public static final String DEST = "./target/sandbox/merge/make_a3_booklet.pdf";
 
    public static final String SRC = "./src/test/resources/pdfs/primes.pdf";
 
    public static void main(String[] args) throws IOException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
 
        new MakeA3Booklet().manipulatePdf(DEST);
    }
 
    protected void manipulatePdf(String dest) throws IOException {
        PdfDocument srcDoc = new PdfDocument(new PdfReader(SRC));
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
        pdfDoc.setDefaultPageSize(PageSize.A3.rotate());
 
        PdfCanvas canvas = new PdfCanvas(pdfDoc.addNewPage());
        float a4Width = PageSize.A4.getWidth();
        int numberOfPages = srcDoc.getNumberOfPages();
        int i = 0;
        while (i++ < numberOfPages) {
            PdfFormXObject page = srcDoc.getPage(i).copyAsFormXObject(pdfDoc);
            if (i % 2 == 1) {
                canvas.addXObject(page, 0, 0);
            } else {
                canvas.addXObject(page, a4Width, 0);
                canvas = new PdfCanvas(pdfDoc.addNewPage());
            }
        }
 
        pdfDoc.close();
        srcDoc.close();
    }
}

MakeBooklet.java

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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * Example written by Bruno Lowagie in answer to a question on StackOverflow:
 * http://stackoverflow.com/questions/34432502
 */
package com.itextpdf.samples.sandbox.merge;
 
import com.itextpdf.kernel.geom.AffineTransform;
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
 
import java.io.File;
import java.io.IOException;
 
public class MakeBooklet {
    public static final String DEST = "./target/sandbox/merge/make_booklet.pdf";
 
    public static final String SRC = "./src/test/resources/pdfs/primes.pdf";
 
    public static void main(String[] args) throws IOException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
 
        new MakeBooklet().manipulatePdf(DEST);
    }
 
    protected void manipulatePdf(String dest) throws IOException {
        PdfDocument srcDoc = new PdfDocument(new PdfReader(SRC));
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
 
        float a4Width = PageSize.A4.getWidth();
        float a4Height = PageSize.A4.getHeight();
        PageSize pagesize = new PageSize(a4Width * 4, a4Height * 2);
        pdfDoc.setDefaultPageSize(pagesize);
 
        int numberOfPages = srcDoc.getNumberOfPages();
        int p = 1;
        PdfCanvas canvas = new PdfCanvas(pdfDoc.addNewPage());
        while ((p - 1) <= numberOfPages) {
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 3, 0);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 12, a4Width);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 15, a4Width * 2);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p, a4Width * 3);
            canvas.saveState();
 
            // Rotate on 180 degrees and copy pages to the top row.
            AffineTransform at = AffineTransform.getRotateInstance((float) -Math.PI);
            at.concatenate(AffineTransform.getTranslateInstance(0, -a4Height * 2));
            canvas.concatMatrix(at);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 4, -a4Width);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 11, -a4Width * 2);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 8, -a4Width * 3);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 7, -a4Width * 4);
            canvas.restoreState();
 
            canvas = new PdfCanvas(pdfDoc.addNewPage());
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 1, 0);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 14, a4Width);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 13, a4Width * 2);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 2, a4Width * 3);
            canvas.saveState();
 
            // Rotate on 180 degrees and copy pages to the top row.
            canvas.concatMatrix(at);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 6, -a4Width);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 9, -a4Width * 2);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 10, -a4Width * 3);
            copyPageToDoc(canvas, srcDoc, pdfDoc, p + 5, -a4Width * 4);
            canvas.restoreState();
 
            if ((p - 1) / 16 < numberOfPages / 16) {
                canvas = new PdfCanvas(pdfDoc.addNewPage());
            }
 
            p += 16;
        }
 
        pdfDoc.close();
        srcDoc.close();
    }
 
    private static void copyPageToDoc(PdfCanvas canvas, PdfDocument srcDoc, PdfDocument pdfDoc,
            int pageNumber, float offsetX) throws IOException {
        if (pageNumber > srcDoc.getNumberOfPages()) {
            return;
        }
 
        PdfFormXObject page = srcDoc.getPage(pageNumber).copyAsFormXObject(pdfDoc);
        canvas.addXObject(page, offsetX, 0);
    }
}

MakeBookletA3.java

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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * Example written by Bruno Lowagie in answer to a question on StackOverflow:
 * http://stackoverflow.com/questions/34432502
 */
package com.itextpdf.samples.sandbox.merge;
 
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.xobject.PdfFormXObject;
 
import java.io.File;
import java.io.IOException;
 
public class MakeBookletA3 {
    public static final String DEST = "./target/sandbox/merge/make_booklet_a3.pdf";
 
    public static final String SRC = "./src/test/resources/pdfs/primes.pdf";
 
    public static void main(String[] args) throws IOException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
 
        new MakeBookletA3().manipulatePdf(DEST);
    }
 
    protected void manipulatePdf(String dest) throws IOException {
        PdfDocument srcDoc = new PdfDocument(new PdfReader(SRC));
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
 
        float a4_width = PageSize.A4.getWidth();
        PageSize pageSize = new PageSize(a4_width * 2, PageSize.A4.getHeight());
        pdfDoc.setDefaultPageSize(pageSize);
 
        int numberOfPages = srcDoc.getNumberOfPages();
        int p = 1;
        PdfCanvas canvas = new PdfCanvas(pdfDoc.addNewPage());
        while ((p - 1) <= numberOfPages) {
            copyPage(canvas, srcDoc, pdfDoc, p + 3, 0);
            copyPage(canvas, srcDoc, pdfDoc, p, a4_width);
 
            canvas = new PdfCanvas(pdfDoc.addNewPage());
            copyPage(canvas, srcDoc, pdfDoc, p + 1, 0);
            copyPage(canvas, srcDoc, pdfDoc, p + 2, a4_width);
 
            if ((p - 1) / 4 < numberOfPages / 4) {
                canvas = new PdfCanvas(pdfDoc.addNewPage());
            }
 
            p += 4;
        }
 
        pdfDoc.close();
        srcDoc.close();
    }
 
    private static void copyPage(PdfCanvas canvas, PdfDocument srcDoc, PdfDocument pdfDoc,
            int pageNumber, float offsetX) throws IOException {
        if (pageNumber > srcDoc.getNumberOfPages()) {
            return;
        }
 
        PdfFormXObject page = srcDoc.getPage(pageNumber).copyAsFormXObject(pdfDoc);
        canvas.addXObject(page, offsetX, 0);
    }
}

Results & Resources

Resources

primes.pdf

Click the following link to see the legacy example for iText 5. Except for security fixes, iText 5 is no longer being developed.