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PDF Association

Mission Statement: To promote Open Standards-based electronic document implementations using PDF technology through education, expertise and shared experience for stakeholders worldwide.
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2018 PDF 2.0 Interop Workshop

Following the success of our previous interop workshops in Cambridge, England and Boston, Massachusetts in 2017, the 3rd PDF 2.0 Interop Workshop is taking place immediately following this year’s PDF Days Europe, in Berlin as part of the post-conferenc …

Post-Conference of PDF Days Europe 2018

On Wednesday, May 16, 2018, directly following PDF Days Europe, the PDF Days Post-Conference offers a variety of workshops on PDF 2.0 Interop or PDF/UA.

PDF Days Europe 2018 – schedule of sessions

Fittingly for the tenth anniversary of PDF’ becoming an ISO standard, standardization will play a significant role this year. The focus will be on recent developments, with an eye on the future. The agenda also includes PDF market analyses, next-generation PDF for mobile devices, universally accessible PDF files and the industry-supported veraPDF validator initiative.

Hotel Recommendations and Sightseeing Tips for PDF Days Europe 2018 in Berlin

You will visit the No. 1 PDF event – the PDF Days Europe 2018 in Berlin? Great! Here are some hotel recommendations and sightseeing tips near the event location (SI Hotel).

A double anniversary for PDF Days Europe 2018

Richard Cohn, Principal Scientist at Adobe, one of the two co-authors of the original PDF specification in the era of Acrobat 1.0 gives the keynote on 25 years of PDF during the PDF Europe 2018.

Added value for PDF users


The PDF/UA framework allows assistive technology, PDF applications and the PDF file format to work together optimally so that as many people as possible have access to PDF documents with sound technical support. Disabled users will see the most significant benefits, as they often use a range of assistive technologies to help them access digital content which their disability would otherwise render inaccessible.

Visual or motor impairments

For example, partially-sighted users, depending on the degree of their impairment, may use a larger screen, customised colour and text size settings, or an intelligent screen magnifier. Blind users, or those with particularly severe visual impairments, may use a so-called screen reader (using text-to-speech) and/or a Braille display in order to read PDF documents. A screen reader is a program installed on the user’s computer which reads all visible content aloud. A Braille display is a haptic interface for the same content; it outputs text using raised, moving Braille dots.

A user with restricted arm or hand mobility may use a range of assistive technology to navigate and make use of a PDF document. Instead of a classical computer mouse, they may use a specialist mouse or keyboard, or an onscreen keyboard. Depending on the degree and nature of their disability and their own aptitude, the user may also have other input options, such as special sensors, switches and/or key combinations, or enlargement options. The user can also give spoken commands to speech recognition software or use eye movements and a gaze-tracking system to control their computer.

Reading and writing difficulties

Dyslexic users find it unusually difficult to learn to read. They find it difficult to recognise and process written text. Assistive technologies such as specialised screen readers can help them overcome this. These read content aloud and highlight the same section of text on the screen. This gives the reader a cue, facilitates comprehension and helps them to improve their reading skills and master written language.

Easier reading and navigation on mobile devices

PDF/UA specifies the technical requirements for assistive technology to fully interact with PDF documents using PDF/UA-compliant PDF software. As long as the assistive technology and PDF software used is fully compliant with the standard, the result for disabled users is a high-quality reading and navigational experience. The standard will also benefit other users, however; anyone who reads documents on mobile devices, for example, will appreciate PDF content automatically adjusting itself to a reader-friendly size without affecting the semantic structure.

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Tags: Color, assistive technology, braille, contrast, screen reader
Categories: PDF/UA