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SEO Your PDF’s

Why ... First, why would anyone want to search engine optimize their PDF files? Well, if you had an eBook, ... product ... or ... document in PDF format, you may wish to opti

Why optimize?

First, why would anyone want to search engine optimize their PDF
files? Well, if you had an eBook, brochure, product description
or technical document in PDF format, you may wish to optimize
these to pick up some extra search engine traffic.

Can the search engines read PDF files?

Yes, most of the major search engines now can read the basic
contents of PDF files, though getting these pages to rank as well
as HTML files is still questionable.

How is it supposed to work?

This is how the workflow is supposed to work. Create your file in
MS Word, or in a draw or page layout program that later can be
distilled into a PDF (with some applications you will have to
create an EPS file first and then distill it and with other
applications, you can distill right out of the apps). If you are
using a program such as MS Word, be mindful to apply the H1, H2,
H3 tags where necessary and optimize the body text as you would
an HTML file.

When you are finished, distill the file. Bring this file into the
full version of Adobe Acrobat 6 for editing. Plug in the
appropriate content, post the PDF on your website and let the
search engine robots index the file.

How do I plug in the appropriate content?

In Adobe Acrobat 6 there are two places to input content into a
PDF file. The first place is under File / Document Properties and
the second place is under Advanced / Document Metadata. Under
File / Document Properties there are several menus but the most
relevant for our purposes is the Description menu. Under the
Description menu, there are fields for Title, Author, Subject and
Keywords.

Now to confuse matters more, let’s go over to the Advanced /
Document Metadata menu. There are a couple of choices here, but
let’s once again look at the Description menu. Under this
Description menu, there are fields for Title, Author,
Description, Description Writer, Keywords, Copyright State,
Copyright Notice and Copyright Info URL.

How does the PDF store the data?

With duplicate fields, it is important to find out how the data
is stored so that we may make some educated guesses as to how the
search engines read this data. I performed a few small
experiments and here is what I have found. The Title and Author
fields seem to be linked to each other because when you change
one and check on the other you will see it too has changed. Also,
the Subject field of the Document Properties menu seems to be
linked to the Description field of the Document Metadata menu for
the same reasons. The Keyword fields, however, are not linked.
Separate sets of keywords can be added to both fields. When the
file is saved, both sets of keywords are stored in the PDF file.

Which set of keywords is correct then?

Adobe stores its metadata in XML format. Opening the PDF file in
Notepad, it appears that the Keyword field under Document
Properties is the one that the search engines will use (this
hasn’t been proven, yet though). The keywords input into this
field appear in the PDF as we have come to expect, separated by
commas, like this: Keywords(movies, cinemas, matinees, theatres,
popcorn).

The keywords that were input into the Document Metadata menu
appear as a sort of list like this:
treeswoodchips


Of course, this doesn’t mean anything really – it is how the
search engines read this that counts.

How does it really work?

I’ve run some preliminary tests (and by this I mean very
preliminary) and more testing will need to be completed to verify
these results, but here is what I have come up with so far. When
a PDF file was first opened in Acrobat 6 the Document Properties
or Document Metadata title and author fields were already filled
in with the file name and author’s initials (information received
from MS Word)

Without filling in any extra data into the Document Properties or
Document Metadata menu, Google used the Title field information
for the title in the results and the description in the results
was acquired from the body copy. Yahoo!, in older PDF’s use the
largest text on the page as the title text. In regards to more
recently indexed PDF documents, however, Yahoo! is using the
Title field information as the title text in the search results.
At this writing, the description text in the search engine
results comes from the body text of the PDF and not the Document
Properties or Document Metadata text.

Thinking I might just get lucky (and hoping for quick results), I
ran a few optimized and non-optimized PDF’s through some of the
more popular search engine spider simulators on the web, but
these spiders did not handle the binary code very well. None of
them returned title or meta tag information and the most popular
keywords were snippets of binary code.

So, at this point, does it really pay to optimize a PDF?

The simple answer is, yes. The title tag and body copy can still
be optimized and the major search engines will index it
accordingly. As far as the Keywords and Description meta tags,
well Google ignores this in PDF’s just as it does in HTML
documents and Yahoo!, which does use the description tag, is only
half way to where it needs to be.

But Google and Yahoo! aren’t the only two search engines /
directories around and with algorithms changing all the time,
perhaps someday soon either the SE’s will be able to fully read a
PDF file or Adobe will offer a patch that will make PDF’s more
SE-friendly. It’s only a matter of timeFree Articles, my friend. Will you be
ready?

Source: Free Articles from ArticlesFactory.com

ABOUT THE AUTHOR


Copyright © 2004 SEO Resource
http://www.seoresource.net
Kevin Kantola head’s up SEO Resource, a California search engine
optimization company devoted to achieving high rankings.



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