gholker/JpgToPdf.java

## README.md

      
    Raw
  

              README.md
            
          
    Problem:

Scanned document stored as series of jpeg images and I needed a PDF. There are ways to accomplish this without code (print to PDF), but I needed to make the file a particular size and print to pdf made the single PDF larger than the combined size of the images.
Solution:

iText PDF library and Java program to create a PDF with the images. See more about iText here: http://developers.itextpdf.com/itext-java
See the code in Main.java. It started with a piece of code from nathan on stackoverflow with modifications to resize the image and to add multiple images (1 per page). See: http://stackoverflow.com/questions/15744454/how-to-convert-jpg-to-pdf-in-android-java
Maven dependency:
  <dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.9</version>
  </dependency>


## JpgToPdf.java
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

public class JpgToPdf {
    public static void main(String arg[]) throws Exception {
        File root = new File("<folder containing images>");
        String outputFile = "output.pdf";
        List<String> files = new ArrayList<String>();
        files.add("page1.jpg");
        files.add("page2.jpg");

        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(new File(root, outputFile)));
        document.open();
        for (String f : files) {
            document.newPage();
            Image image = Image.getInstance(new File(root, f).getAbsolutePath());
            image.setAbsolutePosition(0, 0);
            image.setBorderWidth(0);
            image.scaleAbsolute(PageSize.A4);
            document.add(image);
        }
        document.close();
    }
}
	import com.itextpdf.text.Document;
	import com.itextpdf.text.Image;
	import com.itextpdf.text.PageSize;
	import com.itextpdf.text.pdf.PdfWriter;

	import java.io.File;
	import java.io.FileOutputStream;
	import java.util.ArrayList;
	import java.util.List;

	public class JpgToPdf {
	public static void main(String arg[]) throws Exception {
	File root = new File("<folder containing images>");
	String outputFile = "output.pdf";
	List<String> files = new ArrayList<String>();
	files.add("page1.jpg");
	files.add("page2.jpg");

	Document document = new Document();
	PdfWriter.getInstance(document, new FileOutputStream(new File(root, outputFile)));
	document.open();
	for (String f : files) {
	document.newPage();
	Image image = Image.getInstance(new File(root, f).getAbsolutePath());
	image.setAbsolutePosition(0, 0);
	image.setBorderWidth(0);
	image.scaleAbsolute(PageSize.A4);
	document.add(image);
	}
	document.close();
	}
	}