ZIP efficiency and file size, Doc vs. PDF

Subject: ZIP efficiency and file size, Doc vs. PDF
From: "Sean Brierley" <sbri -at- haestad -dot- com>
To: "TECHWR-L" <techwr-l -at- lists -dot- raycomm -dot- com>
Date: Fri, 16 Aug 2002 10:36:59 -0400


Just to follow up.

I have a 28MB Word doc with embedded and referenced graphics. This zips
down to 3.2 MB using WinZip and maximum compression.

The PDF from the above doc, using Acrobat 5, ZIP compression (versus
JPEG) and no downsampling of graphics, and including embedded fonts, is
3.8MB. That PDF compresses to 3.5 MB using the same WinZip and settings.

If I was more aggressive with graphics compression in my PDF, if I chose
not to embed fonts, etc., I could easily get the PDF file size a little
lower and reduce the size of the resulting ZIP.

That is, ZIP clearly compresses Word Doc files more than PDF files. But,
the overall efficiency and resulting file size is pretty much a tie.

Cheers,

Sean

-----------------------------------------
Sean Brierley
Software Documentation Specialist
Haestad Methods
http://www.haestad.com
203-805-0572 (voice)
203-597-1488 (fax)



-----Original Message-----
From: Sean Brierley
Sent: Thursday, August 15, 2002 12:17 PM

<snipped>

As for the ZIP thing, that only means that the PDF was created to be
compact. If your word doc file is as efficient, then ZIP will not
compress it very much, either. Right?

I agree that a lot of people are confused about many aspects of PDF and
Acrobat. I further agree that Adobe documentation on the subject is
missing, hard to find, or confusing.

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