[pdftex] PDF 1.7

James Quirk jjq at galcit.caltech.edu
Thu Dec 14 03:46:50 CET 2006

On Wed, 13 Dec 2006, Victor Ivrii wrote:

> On 12/13/06, Martin Schröder <martin at oneiros.de> wrote:
> > The new PDF Reference...
> >
> > http://www.adobe.com/devnet/pdf/pdf_reference.html
> Now in color (look at Color Plates section which explains the size
> grown to 31 MB)
My copy of PDFReference16.pdf has the same color plates as the new 
pdf_reference.pdf, yet it is only 9.1 MBytes. So I don't think the color 
plates are responsible for the bloating. But what I've noticed is that 
PDFReference16.pdf employs PDF1.5, with compressed stream objects, while 
the new pdf_reference.pdf has reverted back to PDF1.4. Therefore I'm 
guessing that it's the absence of stream objects in PDF1.4 that accounts 
for the dramatic increase in file size. Any ideas as to why Adobe reverted 
back to PDF1.4 for their new document?


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