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Can I remove content streams from Adobe PDF file?

Hi, I have a 1.84 MB PDF created with Adobe Acrobat from an InDesign CS2 file. I've already reduced the file size by reducing the image quality, but I need to get the document below 1MB if possible.

When I audit space usage in the PDF optimizer tool, I see that over 1MB of space is being taken up by "Content Streams". Is there any way to:

a) identify what the content streams are and what they are doing?
b) reduce the size of content streams?

Thanks
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Jeff-C
Asked:
Jeff-C
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ddhammCommented:
Well, I have no ideas if you can reduce the size of the content streams by knowing what they are.  Maybe there is a way to not include some information that is unnecessary when you make the PDF.

This document describes more about the content streams:
http://help.adobe.com/en_US/Acrobat/8.0/3D/help.html?content=WS561DA35A-C1C6-4493-AE1D-80C46C2C571A.html
It says you can browse the structure of a PDF document.  So, I suppose you could try this method to see what streams are in your document.

DeeDee
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Jeff-CAuthor Commented:
Thanks for pointing me to this document. Apparently the only way to reduce the size of content streams is to manipulate the source document. Using the Pre-Flight option tells a lot about the document structure (thanks!), but it was still guesswork exactly what in the source document was causing the huge file size. We were not able to substantially reduce the file size in the end. Your answer gave us a starting place and was very helpful.
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ddhammCommented:
Thanks for letting me know what you had to do! And I am glad that document helped some.

DeeDee
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