How to extract text and image from a PowerPoint Document in Java

Texts and images are the main elements on the Presentation slides. In this article, we will show you how to extract text and image from a PowerPoint document using Free Spire.Presentation for Java.

Installation

If you use maven, you need to specify the dependencies for Free Spire.Presentation for Java library in your project’s pom.xml file.

<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.presentation.free</artifactId>  
        <version>3.9.0</version>  
    </dependency>  
</dependencies>

For non-maven projects, download Free Spire.Presentation for Java, unzip the package and add Spire.Presentation.jar in the lib folder into your project as a dependency.

import com.spire.presentation.*;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileWriter;

public class Test {
    public static void main(String[] args) throws Exception {
        //Create a presentation instance.
        Presentation ppt = new Presentation();

        // Load the document from disk.
        ppt.loadFromFile("Sample.pptx");

            StringBuilder buffer = new StringBuilder();
            //Traverse the presentation slides to extract the text.
            for (Object slide : ppt.getSlides()) {
                for (Object shape : ((ISlide) slide).getShapes()) {
                    if (shape instanceof IAutoShape) {
                        for (Object tp : ((IAutoShape) shape).getTextFrame().getParagraphs()) {
                            buffer.append(((ParagraphEx) tp).getText());
                        }
                    }
                }
            }
            //Save to document to .txt
            FileWriter writer = new FileWriter("ExtractText.txt");
            writer.write(buffer.toString());
            writer.flush();
            writer.close();

        //Extract all the images from the presentation slides
        for (int i = 0; i < ppt.getImages().getCount(); i++) {
            BufferedImage image = ppt.getImages().get(i).getImage();
            ImageIO.write(image, "PNG", new File(String.format("extractImage-%1$s.png", i)));
        }
    }
}

The effective screenshot of the extracted images: