Watermarks are commonly used in Word documents to indicate importance or copyright ownership. This guide demonstrates how to use the Free Spire.Doc for Java libray to add both text and image watermarks to Word documents programmatically.

Library Integration

Option 1: Download the Free Spire.Doc for Java package, extract it, and add the Spire.Doc.jar file from the lib folder to your project dependencies.

Option 2: Configure Maven by adding the following repository and dependency to your pom.xml file:

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

    // Load existing Word document
    Document wordDoc = new Document();
    wordDoc.loadFromFile("InputDocument.docx");
    
    // Initialize text watermark object
    TextWatermark watermark = new TextWatermark();
    
    // Configure watermark properties
    watermark.setText("Confidential");
    watermark.setFontName("Arial");
    watermark.setFontSize(55);
    watermark.setColor(Color.BLUE);
    watermark.setLayout(WatermarkLayout.Diagonal);
    
    // Apply watermark to document
    wordDoc.setWatermark(watermark);
    
    // Save modified document
    wordDoc.saveToFile("TextWatermarkOutput.docx", FileFormat.Docx_2013);
}

}

</div>### Image Watermark Implementation

<div>```
import com.spire.doc.*;

public class InsertImageWatermark {
    public static void main(String[] args) throws Exception {
        
        // Load target document
        Document document = new Document();
        document.loadFromFile("InputDocument.docx");
        
        // Create image watermark instance
        PictureWatermark imgWatermark = new PictureWatermark();
        
        // Configure image properties
        imgWatermark.setPicture("watermark_logo.png");
        imgWatermark.setScaling(25);
        imgWatermark.isWashout(true);
        
        // Add image watermark to document
        document.setWatermark(imgWatermark);
        
        // Save result document
        document.saveToFile("ImageWatermarkOutput.docx", FileFormat.Docx);
    }
}