Facebook
Twitter
YOUTUBE
LINKEDIN
XING
About the contributor
PDF Association

Mission Statement: To promote Open Standards-based electronic document implementations using PDF technology through education, expertise and shared experience for stakeholders worldwide.
More contributions
PDF 2.0 examples now available

The PDF Association is proud to present the first PDF 2.0 example files made available to the public. Created and donated to the PDF Association by Datalogics, this initial set of PDF 2.0 examples were crafted by hand and intentionally made simple in construction to serve as teaching tools for learning PDF file structure and syntax.

PDF 2.0 interops help vendors

The PDF 2.0 interop workshops included many vendors with products for creating, editing and processing PDF files. They came together in Boston, Massachusetts for a couple of days to test their own software against 3rd party files.

PDF Days Europe underscores the importance of PDF as a key component of business processes

2017 marks a record number of attendees / Experts shared fully-grounded wisdom on PDF standards across the two-day event Berlin. With over 200 attendees, this year’s PDF Days Europe in Berlin was a significant success with the largest attendance of any …

Slides and video recordings of the PDF Days Europe 2017

About 35 informative sessions across a wide range of topics, including the next-generation PDF project. Within the video frames you can use the red “play” button to get a short impression of the talk or can enjoy the high resolution version by clicking …

PDF Days Europe 2017 hits the target!

With more than 200 participants, this year’s PDF Days Europe was the largest to-date. Early feedback from attendees makes clear that it was also a great success.

PDF/UA: The ISO standard for universal accessibility


Information plays a central role in society today, and it is becoming more and more common for that information to be offered in digital form alone. The reliable, user-friendly Portable Document Format (PDF) has become the world’s file type of choice for providing information as a digital document.

Tags can be added to a PDF in order to structure the content of a document. These tags are a critical requirement if any form of assistive technology (such as screen readers, specialist mice, and speech recognition and text-to-speech software) is to gain access to this content. To date, PDF documents have rarely been tagged, and not all software can make use of PDF tags. In practical terms, this particularly reduces information‘s accessibility for people with disabilities who rely on assistive technology.

Tagged PDF: Tags are standardised content markers in a digital document. First available in Adobe Acrobat 5, tags can be used to create a PDF file with a logical document structure . Tags are a critical requirement for accessing the content in PDFs with assistive technology.

In order to ensure future access to PDF documents for as many people as possible, the ISO 14289-1 standard (known as PDF/UA) was developed by specialists from around the world. It was published by the ISO in July 2012 with the official title “ISO 14289-1. Document management applications – Electronic document file format enhancement for accessibility – Part 1: Use of ISO 32000-1 (PDF/UA-1)”.

PDF/UA-1 is the first part of the PDF/UA standards family; the “UA” suffix stands for “Universal Accessibility” and refers to the standard’s central requirement. It is the first complete definition of a set of requirements for universally-accessible PDF documents.

PDF/UA is aimed primarily at developers of software for creating, reading, editing and validating PDF, and at suppliers of assistive technology. The standard itself is not intended as a field manual for day-to-day use, but for PDF creators looking to learn more. The PDF Association and its members offer specialist articles, webinars and training, providing detailed information about PDF/UA and explaining how to create accessible PDF content. Implementing the clearly-defined requirements of the PDF/UA standard in software products will allow users to easily create accessible PDF documents without any special training, opening up effortless access to high quality content to as many people as possible.

At the time of PDF/UA’s publication, of course, there were no programs available which were fully compliant with the standard. Since then, however, a number of software developers including Adobe Systems, axaio software, callas software, NetCentric Technologies, NV Access, PDFlib, xyMedia, the Swiss National Association of and for the Blind (SNAB), and the Swiss foundation “Zugang für alle” (Access For All) have already announced or even released products supporting the PDF/UA format.

More and more developers, government authorities and other organisations are expected to accept PDF/UA as an absolute requirement for universally accessible PDF documents from this point on.

overview – next >


Tags: ISO, Universal Accessibility, tags
Categories: PDF/UA