When a PowerPoint presentation is converted to PDF, its document layout and formatting are fixed. Recipients can view the converted document without having Microsoft PowerPoint to be installed, but they can not modify it easily. In this article, we will demonstrate how to convert PowerPoint presentations to PDF in Java using Spire.Presentation for Java library.

• Convert a Whole PowerPoint Presentation to PDF
• Convert Specific Slide of a PowerPoint Presentation to PDF

Install Spire.Presentation for Java

First of all, you're required to add the Spire.Presentation.jar file as a dependency in your Java program. The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file in your application by adding the following code to your project's pom.xml file.

<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.presentation</artifactId>
        <version>10.11.4</version>
    </dependency>
</dependencies>

Convert a Whole PowerPoint Presentation to PDF in Java

The following steps show you how to convert a whole PowerPoint presentation to PDF:

• Initialize an instance of Presentation class.
• Load the PowerPoint presentation using Presentation.loadFromFile() method.
• Save it to PDF using Presentation.saveToFile(filePath, FileFormat.PDF) method.

import com.spire.presentation.FileFormat;
import com.spire.presentation.ISlide;
import com.spire.presentation.Presentation;

public class ConvertPowerPointToPDF {
    public static void main(String []args) throws Exception {
        //Create a Presentation instance
        Presentation ppt = new Presentation();
        //Load a PowerPoint presentation
        ppt.loadFromFile("Sample.pptx");

        //Save it as PDF
        ppt.saveToFile("ToPdf1.pdf", FileFormat.PDF);
    }
}

Convert Specific Slide of a PowerPoint Presentation to PDF in Java

The following steps show you how to convert a specific slide of a PowerPoint presentation to PDF:

• Initialize an instance of Presentation class.
• Load the PowerPoint presentation using Presentation.loadFromFile() method.
• Get the desired slide by its index using Presentation.getSlides().get(slideIndex) method.
• Save it to PDF using ISlide.saveToFile(filePath, FileFormat.PDF) method.

import com.spire.presentation.FileFormat;
import com.spire.presentation.ISlide;
import com.spire.presentation.Presentation;

public class ConvertSlidesToPDF {
    public static void main(String []args) throws Exception {
        //Create a Presentation instance
        Presentation ppt = new Presentation();
        //Load a PowerPoint presentation
        ppt.loadFromFile("Sample.pptx");

        //Get the second slide
        ISlide slide= ppt.getSlides().get(1);

        //Save the slide to PDF
        slide.saveToFile("ToPdf2.pdf", FileFormat.PDF);
    }
}

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

This article demonstrates how to set the row height and column width of an existing table in a PowerPoint document using Spire.Presentation for Java.

Below is the screenshot of the input PowerPoint document:

import com.spire.presentation.FileFormat;
import com.spire.presentation.ISlide;
import com.spire.presentation.ITable;
import com.spire.presentation.Presentation;

public class Table_Row_Height_and_Column_Width {
    public static void main(String[] args) throws Exception {
        //Load the PowerPoint document
        Presentation ppt = new Presentation();
        ppt.loadFromFile("Table.pptx");

        //Get the first slide
        ISlide slide = ppt.getSlides().get(0);

        //Get the first table in the slide
        ITable table = (ITable) slide.getShapes().get(0);

        //Change the height of the first table row and the width of the first table column
        table.getTableRows().get(0).setHeight(100);
        table.getColumnsList().get(0).setWidth(250);

        //Save the document
        ppt.saveToFile("Output.pptx", FileFormat.PPTX_2013);
        ppt.dispose();
    }
}

Output:

When you edit a PDF document, it is sometimes necessary to delete redundant pages of the document or add new pages to the document. This article will show you how to add or delete pages in a PDF document using Spire.PDF for Java.

• Add Empty Pages to a PDF Document
• Delete an Existing Page in a PDF Document

Install Spire.PDF for Java

First of all, you're required to add the Spire.Pdf.jar file as a dependency in your Java program. The JAR file can be downloaded from this link. If you use Maven, you can easily import the JAR file in your application by adding the following code to your project's pom.xml file.

<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>11.11.11</version>
    </dependency>
</dependencies>

Add Empty Pages to a PDF Document

The following steps show you how to add empty pages to a specific position of a PDF document and its end.

• Create a PdfDocument instance.
• Load a sample PDF document using PdfDocument.loadFromFile() method.
• Create a new blank page and insert it into a specific position of the document using PdfDocument.getPages().insert(int index) method.
• Create another new blank page with the specified size and margins and then append it to the end of the document using PdfDocument.getPages().add(java.awt.geom.Dimension2D size, PdfMargins margins) method.
• Save the document to another file using PdfDocument.saveToFile() method.

import com.spire.pdf.*;
import com.spire.pdf.graphics.PdfMargins;

public class InsertEmptyPage {
    public static void main(String[] args) {
        //Create a PdfDocument instance
        PdfDocument pdf = new PdfDocument();

        //Load a sample PDF document
        pdf.loadFromFile("C:\\Users\\Test1\\Desktop\\sample.pdf");

        //Insert a blank page to the document as the second page
        pdf.getPages().insert(1);

        //Add an empty page to the end of the document
        pdf.getPages().add(PdfPageSize.A4, new PdfMargins(0, 0));

        //Save the document to another file
        pdf.saveToFile("output/insertEmptyPage.pdf");
        pdf.close();
    }
}

Delete an Existing Page in a PDF Document

The following steps are to delete a specific page of a PDF document.

• Create a PdfDocument instance.
• Load a sample PDF document using PdfDocument.loadFromFile() method.
• Remove a specific page of the document using PdfDocument.getPages().removeAt(int index) method.
• Save the document to another file using PdfDocument.saveToFile() method.

import com.spire.pdf.*;

public class DeletePage {
    public static void main(String[] args) {

        //Create a PdfDocument instance
        PdfDocument pdf = new PdfDocument();

        //Load a sample PDF document
        pdf.loadFromFile("C:\\Users\\Test1\\Desktop\\sample.pdf");

        //Delete the second page of the document
        pdf.getPages().removeAt(1);

        //Save the document to another file
        pdf.saveToFile("output/deletePage.pdf");
        pdf.close();
    }
}

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.