Learning Centers

Introducing Planet PDF's Learning Centers

The professional learning centers provide the essential information for anyone from beginners to CEos to developers wanting to improve their knowledge on essential PDF topics. New Planet PDF Contributing Editor Duff Johnson explains.

March 10, 2004

PDF security - a brief history of development

Adobe was the first organization that set out to try and provide security controls for PDF based documents, and had their own particular views as to what users might (or might not) want in order to control the access to and use of information in PDF format. Information security (in the sense of access controls, and continuing use controls) was not provided in earliest versions of PDF documents, simply because the most important feature of Adobe PDF was to ensure that what was shown on-screen or on a printed copy was the same, regardless of operating system, or printing device, being used.

Accessible PDF

Until recently, the focus in content accessibility has tended to focus on HTML and XML. As a result, content managers often turn a blind eye to the hundreds of thousands of PDF files sitting on their servers, downloaded every day... and 99% of them, hideously inaccessible, and utterly non-compliant with Section 508.

In this Learning Center, Planet PDF introduces the basic issues of accessible PDF, and what you can do about it. If you have questions, please post them on the new PDF Accessibility Conference in the Planet PDF Forum.

Introduction to Acrobat & PDF

If you've ever wondered about PDF, or even if you've just been annoyed when that "Adobe thing" pops up when you are surfing the web, you'll find something of interest here. In this Learning Center at Planet PDF we try to answer some of the most basic questions about PDF.

Adobe Acrobat 6.0 Product Family

Adobe has segmented Acrobat into three distinctly separate products. Check out our in-depth learning center on the biggest release since 1.0.

The Planet PDF team gives you the quick wrap, explores the key new features -- including PDF creation, commenting & reviewing, file optimizing, document searching, adding stamps and text -- and explains feature by feature the differences between Professional and Standard versions.

PDF Preflight

Have you ever been shocked when you saw the final printed result of something you had designed or pulled your hair out because the perfect PDF file you just received doesn't behave as you expected? In this Learning Center at Planet PDF, Enfocus's David van Driessche explains why that happens and what you can do to again sleep well at night...

PDF Color

Many details on color usage in PDF and PostScript have been published by Adobe and other sources, but it can be a daunting task to understand it, much less put it into practical use. This Learning Center discusses the color secrets of PDF and their associated myths. It also attempts to provide a clearer picture of how color is applied in PDF as well as the related issues for composite color prepress workflows.

Introduction to Acrobat JavaScript

Adobe have integrated a fully fledged scripting language inside Acrobat - Javascript (ECMA Script). This provides document authors, developers and system integrators with the ability to automate and maintain their PDF documents from within Acrobat.

However when we talk about Javascript inside Acrobat we need to think slightly out of the box to get a proper handle on the capabilities and limitations, we explore how to think 'AcroJS' in this Learning Center.

Introduction to Acrobat Development

I remember what it was like when I first started developing solutions around Acrobat and PDF, it was daunting. So much information, too many technologies and no central location to piece it all together. This is where Planet PDF's Developer area and its first learning center come in.

We put the information, technologies and resources at your fingertips and explain how all of the components relate and combine so you can produce real world solutions around Acrobat and PDF. Each of the articles in this Learning Center provide clear, concise and relevant information to the modern world of programming with Acrobat and PDF.

PDF In-Depth Free Product Trials Ubiquitous PDF

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Back to the past, 15 years ago! Open Publish 2002

Looking back to 2002, it's amazing how much of the prediction became a reality. Take a read and see what you think!

September 14, 2017
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Features

Adding a PDF Stamp Comment

OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.