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On Fri, 15 Apr 2005, Mike Wills wrote:

The resulting file of a 3000 or so page PDF comes out to be about 5-10MB
range I believe.

In that case the should be no problem with the XREF running out of space. The PDF Reference (version 1.5) states that the format of the xref is as follows:


nnnnnnnnnn ggggg n eol

where nnnnnnnnnn is a 10-digit byte offset, ggggg is a 5-digit generation number, n is a literal keyword identifying this as an in-use entry, and eol is a 2-character end-of-line sequence.

Therefore, if the PDF file is only 10MB large, the byte offset cannot possibly be larger than 10 digits. So the 3,000 page limit is not due to limitations of the PDF xref.

btw - the offset is the number of bytes from the beginning of the file. The largest the offset could possibly be is the size of the file. That means a PDF is limited to 10GB in size (before the xref and without doing any other tricks).

James Rich

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