Java Tutorial/PDF/PDF Compress

Compress Pdf document

   <source lang="java">

import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.PdfWriter; public class MainClass {

 public static void main(String[] args) throws Exception {
   PdfReader reader = new PdfReader("1.pdf");
   PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("my.pdf"),PdfWriter.VERSION_1_5);
   stamper.setFullCompression();
   stamper.close();
   reader = new PdfReader("1.pdf");
   stamper = new PdfStamper(reader, new FileOutputStream("myDecompressed.pdf"), "1");
   Document.rupress = false;
   int total = reader.getNumberOfPages() + 1;
   for (int i = 1; i < total; i++) {
     reader.setPageContent(i, reader.getPageContent(i));
   }
   stamper.close();
   showFileSize("1.pdf");
   showFileSize("my.pdf");
   showFileSize("myDecompressed.pdf");
 }
 private static void showFileSize(String filename) throws IOException {
   PdfReader reader = new PdfReader(filename);
   System.out.print("Size ");
   System.out.print(filename);
   System.out.print(": ");
   System.out.println(reader.getFileLength());
 }

}</source>

Full Compression

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfWriter; public class MainClass {

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setFullCompression();
   document.open();
   document.add(new Paragraph("Hello World"));
   document.close();
 }

}</source>