Java convert image to PDF

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

public class imageToPDF {
    public static void main(String[] args) throws Exception {

        //Create a PDF document
        PdfDocument pdf = new PdfDocument();
        //Add a new page
        PdfPageBase page = pdf.getPages().add();

        //Load the image
        PdfImage image = PdfImage.fromFile("logo.jpg");

        double widthFitRate = image.getPhysicalDimension().getWidth() / page.getCanvas().getClientSize().getWidth();
        double heightFitRate = image.getPhysicalDimension().getHeight() / page.getCanvas().getClientSize().getHeight();
        double fitRate = Math.max(widthFitRate, heightFitRate);

        //get the picture width and height
        double fitWidth = image.getPhysicalDimension().getWidth() / fitRate;
        double fitHeight = image.getPhysicalDimension().getHeight() / fitRate;

        //Draw image
        page.getCanvas().drawImage(image, 0, 30, fitWidth, fitHeight);

        // Save document to file
        pdf.saveToFile("output/ToPDF.pdf");
        pdf.close();

    }
}