Adding metadata

This is a code example of iText PDF, discover more.

31st May 2016
admin-marketing

These examples were written in answer to questions such as:

AddLanguage.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 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 the following question:
 * http://stackoverflow.com/questions/24370273/set-initial-view-pdf-document-properties-using-itextsharp-with-c-sharp
 */
package com.itextpdf.samples.sandbox.stamper;
 
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.File;
 
@Category(SampleTest.class)
public class AddLanguage extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/stamper/add_language.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new AddLanguage().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        pdfDoc.getCatalog().put(PdfName.Lang, new PdfString("EN"));
        pdfDoc.close();
    }
}
AddXmpToPage.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 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:
 * http://stackoverflow.com/questions/28427100/how-do-i-add-xmp-metadata-to-each-page-of-an-existing-pdf-using-itextsharp
 */
package com.itextpdf.samples.sandbox.stamper;
 
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfPage;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.xmp.XMPMetaFactory;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.File;
 
@Category(SampleTest.class)
public class AddXmpToPage extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/stamper/add_xmp_to_page.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new AddXmpToPage().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
 
        PdfPage page = pdfDoc.getFirstPage();
        page.setXmpMetadata(XMPMetaFactory.create());
 
        pdfDoc.close();
    }
}
ChangeInfoDictionary.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 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:
 * http://stackoverflow.com/questions/21607286/unicode-characters-in-document-info-dictionary-keys
 * <p>
 * A user wants to update a Document Info Dictionary (DID)
 * introducing a custom key with a Unicode character.
 */
package com.itextpdf.samples.sandbox.stamper;
 
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfDocumentInfo;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
 
import org.junit.experimental.categories.Category;
 
import java.io.File;
import java.util.HashMap;
import java.util.Map;
 
@Category(SampleTest.class)
public class ChangeInfoDictionary extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/stamper/change_info_dictionary.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new AddLongTable().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        PdfDocumentInfo info = pdfDoc.getDocumentInfo();
        Map<String, String> newInfo = new HashMap<>();
        newInfo.put("Special Character: \u00e4", "\u00e4");
        StringBuilder buf = new StringBuilder();
        buf.append((char) 0xc3);
        buf.append((char) 0xa4);
        newInfo.put(buf.toString(), "\u00e4");
        info.setMoreInfo(newInfo);
        pdfDoc.close();
    }
}
ChangeVersion.java
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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2019 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 the following question:
 * http://stackoverflow.com/questions/23083220/how-to-set-pdf-version-using-itextsharp
 */
package com.itextpdf.samples.sandbox.stamper;
 
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfVersion;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.WriterProperties;
import com.itextpdf.samples.GenericTest;
 
import java.io.File;
 
public class ChangeVersion extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/stamper/change_version.pdf";
    public static final String SRC = "./src/test/resources/pdfs/OCR.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new ChangeVersion().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST, new WriterProperties().setPdfVersion(PdfVersion.PDF_1_5)));
        pdfDoc.close();
    }
}

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



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