Document document = new Document(reader.getPageSizeWithRotation(1));
PdfCopy writer = new PdfCopy(document, new FileOutputStream(outFile));
document.open();
PdfImportedPage page = writer.getImportedPage(reader, ++i);
writer.setFullCompression();
writer.addPage(page);
document.close();
writer.close();
I am using iText to split and merger the PDF, I need your help to reduce (compress) the output PDF size programmatically. Please let me know the steps to achieve the same.
With writer.setFullCompression() you already compressed file as much as possible. With iText you can't do anything more.
use iText
PdfReader reader = new PdfReader(new FileInputStream("input.pdf"));
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("output.pdf"));
int total = reader.getNumberOfPages() + 1;
for ( int i=1; i<total; i++) {
reader.setPageContent(i + 1, reader.getPageContent(i + 1));
}
stamper.setFullCompression();
stamper.close();
Also change the PdfCopy to PdfSmartCopy. It will eliminate duplicate streams which have the same hash (md5).
You can use ghostscript, invoking the exe with specific parameters for print your pdf with the ghostscript's pdfwriter (example: sDEVICE=pdfwrite -sOutputFile=myfile.pdf). There are several accepted parameters, for compression or quality levels, etc. It may result and optimized and smaller file.
Multiple Bitmap Image to pdf converter --> Compressed Pdf
public static String createPDFWithMultipleImage(Bitmap[] bitmaps, String pdf_name){
String directoryPath = Environment.getExternalStorageDirectory() + "/OpPath/";
File file = new File(directoryPath,pdf_name);
try {
FileOutputStream fileOutputStream = new FileOutputStream(file);
PdfDocument pdfDocument = new PdfDocument();
for (int i = 0; i < bitmaps.length; i++){
Bitmap original = bitmaps[i];
int nh = (int) ( original.getHeight() * (512.0 / original.getWidth()) );
Bitmap bitmap = Bitmap.createScaledBitmap(original, 512, nh, true);
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(bitmap.getWidth(), bitmap.getHeight(), (i + 1)).create();
PdfDocument.Page page = pdfDocument.startPage(pageInfo);
Canvas canvas = page.getCanvas();
Paint paint = new Paint();
paint.setColor(Color.BLUE);
canvas.drawPaint(paint);
canvas.drawBitmap(bitmap, 0f, 0f, null);
pdfDocument.finishPage(page);
bitmap.recycle();
}
pdfDocument.writeTo(fileOutputStream);
pdfDocument.close();
return file.toString();
} catch (IOException e) {
e.printStackTrace();
return file.toString();
}
}
