Images play an important role in an electronic document. Developers may have the requirement to add an image (for example, a company logo) to a PDF document, or replace the specific image in a document with a new image, or even delete the specified image permanently from a document. This article will introduce how to achieve these tasks by using Spire.PDF for Java.
Installing Spire.Pdf.jar
If you create a Maven project, you can easily import the jar in your application using the following configurations. For non-Maven projects, download the jar file from this link and add it as a dependency in your application.
<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.pdf</artifactId>
<verson>4.1.2</version>
</dependency>
</dependencies>
Example 1. Add an Image to PDF
import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
import com.spire.pdf.graphics.PdfImage;
public class AddImage {
public static void main(String[] args) {
//Create a PdfDocument object
PdfDocument doc = new
PdfDocument();
//Add a page
PdfPageBase page = doc.getPages().add();
//Load an image from path
PdfImage image = PdfImage.fromFile("C:\\Users\\Administrator\\Desktop\\web-design.jpg");
//Set the image width and height in the PDF
float width = image.getWidth()
* 0.4f;
float height = image.getHeight()
* 0.4f;
//Define a position to draw image
double x =
(page.getCanvas().getClientSize().getWidth() - width) / 2;
float y = 0f;
//Draw image on page canvas
page.getCanvas().drawImage(image, x, y, width, height);
//Save the document
doc.saveToFile("output/DrawImage.pdf", FileFormat.PDF);
}
}
Example 2. Replace an Image in PDF
import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
import com.spire.pdf.graphics.PdfImage;
public class ReplaceImage {
public static void main(String[] args) {
//Load the PDF file
PdfDocument doc = new
PdfDocument();
doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\Sample.pdf");
//Get the first page
PdfPageBase page = doc.getPages().get(0);
//Load an image
PdfImage image = PdfImage.fromFile("C:\\Users\\Administrator\\Desktop\\c-sharp.png");
//Replace the first image in the first page with the loaded image
page.replaceImage(0, image);
//Save the file
doc.saveToFile("output/ReplaceImage.pdf", FileFormat.PDF);
}
}
Example 3. Remove an Image from PDF
import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;
import com.spire.pdf.PdfPageBase;
public class RemoveImage {
public static void main(String[] args) {
//Create a PdfDocument object
PdfDocument doc = new
PdfDocument();
//Load the sample PDF file
doc.loadFromFile("C:\\Users\\Administrator\\Desktop\\Sample.pdf");
//Get the specified page
PdfPageBase page = doc.getPages().get(0);
//Delete a particular image by its index
page.deleteImage(0);
//Save the file
doc.saveToFile("output/DeleteImage.pdf", FileFormat.PDF);
}
}
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