PdfReader reader = new PdfReader(new
RandomAccessFileOrArray(inputFileName), null);
and PdfStamper in append mode should help.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Gerrit Germis
> Sent: Tuesday, May 15, 2007 3:33 PM
> To: [email protected]
> Subject: [iText-questions] iText extremely slow on large PDF files
>
> Hi all,
>
> We have a PDF file that has approximately 50.000 pages in it. It is
> about 35 MB in size. The file needs to be digitally signed and
> timestamped. I understand that there will be some slow down for bigger
> files, but this seems to be a bit extreme (from 30 to 45 minutes per
> document). Here are the bottlenecks of the code:
>
> PdfReader reader = new PdfReader(inputFileName); // takes
> about 10 minutes
> ...
> sap.preclose(excl); // takes about 20 minutes
> ...
> sap.close(dic); // takes about another 5 to 10 minutes
>
> Is there anything I can do to speed up the processing? Splitting the
> input file is not an option (since our customer needs the single large
> file). The files could actually grow much bigger if for example some
> images are incorporated on the pages in the PDF. So might need to be
> able to handle 100MB or even 200MB files in the future too.
>
> Any help would be greatly appreciated.
> thanks in advance,
>
> Gerrit Germis
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