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From: Jeffrey Goldberg on 13 Apr 2010 00:58
On Mon, 12 Apr 2010, in <isw-48CE5E.17162612042010@[216.168.3.50]> isw wrote:

> I can think of several non-mail ways to transfer the files (including
> just using the Apache install on my Mac). What I was curious about is
> why a PDF of 1/4 the pages took a file 1/2 the size.

The most common (though not only) answer is embedded fonts in the PDF.
The font information will need to be there for each segment that contains
a range of characters from that font.

Cheers,

-j

--
Jeffrey Goldberg http://www.goldmark.org/jeff/
I rarely read top-posted, over-quoting or HTML postings.
http://improve-usenet.org/
From: Richard Maine on 13 Apr 2010 02:30
Richard Maine <nospam(a)see.signature> wrote:

> isw <isw(a)witzend.com> wrote:
>
> > What I was curious about is
> > why a PDF of 1/4 the pages took a file 1/2 the size.
>
> Hard to say without looking at the exact files, but there are plenty of
> completely trivial ways this can happen. For example, I've had PDFs with
> *LARGE* amounts of overhead foor things like fint bitmaps. Break the pdf
> into 2 parts and the overhead goe sin both.

Sorry about the large number of typos (even for me). Probably should not
have rushed to post that without proofreading when my wife was already
calling for me to come to dinner.

--
Richard Maine | Good judgment comes from experience;
email: last name at domain . net | experience comes from bad judgment.
domain: summertriangle | -- Mark Twain
From: Su-Z-Q on 13 Apr 2010 06:44
In article <isw-9C7375.09583612042010@[216.168.3.50]>, isw <isw(a)witzend.com>
wrote:

> I have an 18 MB PDF that I'd like to e-mail to a couple of friends.
> That's a bit large for a single attachment, so I thought I'd break it up.
>
> The whole document is 514 pages. I opened it up in Preview, and did a
> Print-to-PDF of the first 130 pages (about a quarter of it).
>
> The resulting PDF is 10.7 MB, more than half the size of the full
> document. Repeating with 65 pages (one-eighth of the full doc) gives me
> 5.4 MB, which is what I was expecting for a quarter of it.
>
> What's up with that?
>
> Isaac

If there are many pictures in that first 25% of your file, then that's where a
lot of the size is located. I use a program called PDFCompress to shrink larger
pdf's. If the file is not just black & white text, it can shrink a file to 25%
of it's original size sometimes. It will vary depending on the file's
composition, however. Some of my cohorts scan documents in
greyscale--PDfCompress really cuts down the file size on these too.
http://www.metaobject.com/Products/
$35--Requires Mac OS 10.5 or later.
--
Facts are stubborn, but statistics are more pliable.
Mark Twain

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