On 7/04/2012 18:32, omid wrote:
Hi
I'm a software developer engineer that I study and research on PDF
format. I want to understand that can I extend this format?
Does Adobe allow developers develop PDF format Or it doesn't?
First let me explain why I think your question is strange: how come you
want to extend and develop PDF if you don't even know that PDF is an ISO
standard?
Adobe brought the PDF specification to the International Standards
Organization (ISO). PDF is now an ISO standard: ISO-32000-1. The first
thing you need to do if you want to study and research the PDF format,
is to get this standard and read it. You will discover that you can add
custom functionality to PDF if you respect certain rules. Note that the
1000-page document won't be enough, you'll also need to read other
Technical Notes (e.g. about fonts, colors,...), RFCs, and other ISO
specifications (ISO 15930, 19005,...).
If you want to "develop the PDF format", you should register with your
country's standards body. For instance: if you live in Belgium, you have
to become a member of the NBN. When you apply for membership, you have
to specify your area of expertise.
From the moment you've paid your subscription fee, you'll receive
drafts of the newly developed standards. For instance: a couple of weeks
ago, you'd have received a DIS (Draft International Standard) for ISO
19005-3 (PDF/A 3, a subset of PDF) and a DIS for ISO-32000-2 (the
upcoming PDF 2 version).
You can then read those standards, and send your comments to your
country's standards body. This institution will assemble the comments,
and the comments will be discussed in the appropriate committee (the ISO
committee for PDF meets 2 to 3 times a year). Your country may chose to
send a representative to this committee.
After each committee, you'll be send information about the decisions
that were made, and in many cases, you'll be asked to cast your vote
indicating if you think the standard should be approved or not (if not:
what needs to change, etc...).
I hope this helps. Note that this work isn't paid, normally you have to
pay to become a member, but the fee is relatively low. For instance: in
Belgium, the membership of the national standards body costs 121
euro/year (VAT included).
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