Hi everyone,
I am having a performance issue with iText that I need help with. All I
want to do is pull out various pages from a large PDF to create many
smaller PDF's. For my test, the large PDF is 22,000 pages, and I'd like
to split it such that every two pages or so is placed in to it's own
PDF. So it would generate 11,000 PDF's aprox. The problem is that it
takes over 9 hours. I've isolated it down to the writer's
".getImportedPage()" function. When I take that function out, it
produces 11,000 PDF's in 7 minutes! I've tried pdfCopy, pdfStamper,
adding the template, wrapping the page in an image object, and the
performance is still poor. Does anyone know how to do this more
efficiently?
This is how I'm splitting the PDF, and it's very slow:
PdfImportedPage page = null;
PdfContentByte cb = PDFwriter.getDirectContent();
page = PDFwriter.getImportedPage(PDFreader, iPages);
cb.addTemplate(page, 1f, 0, 0, 1f, 0, 0);
I tried using the image object, and it seems to be a bit faster but not
much.
PdfImportedPage page = PDFwriter.getImportedPage(PDFreader, iPages);
Image image = Image.getInstance(page);
PDFdoc.add(image);
Thanks.
Alex
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