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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.
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“PDF can do THAT?!”

PDF files deliver a complete package of information that defines a document; everything that’s needed to represent the text, graphics and layout that the recipient receives. To most people, PDF is “electronic paper” – the digital expression of a cellul …

The only digital document format

What is a “document”? A document is a record of some (typically written) content – a publication, a contract, a statement, a painting – at a moment in time. Until the advent of computers (and scanners), the media typically considered useable for such r …

Save the Date: PDF Days Europe 2018, May 14-16, in Berlin

PDF Days Europe is the most popular PDF event of the year. It’s where the PDF industry meets, and where institutional and corporate users come to learn what else PDF could do for them. The first two PDF Days will offer a broad range of educational sessions focussed on current and perennial topics in the world of PDF technology implementation.

The Power of the Page

It’s a question that vexes vendors of web-based solutions everywhere: why do people still insist on PDF files? And why does PDF’s mindshare keep going up? “PDF is such antediluvian technology!” they say. “It’s pre-web, are you kidding me? It’s so old-f …

PDF Association technical resources: an overview

PDF is PDF because files produced with one vendor’s software can be read using a different vendor’s software with no loss of fidelity. Interoperability is key to our industry. The PDF Association is a international membership organization dedicated to …

Matterhorn Protocol 1.01 now available


Screenshot of the Matterhorn Protocol.The PDF Association’s PDF/UA Competence Center is pleased to announce the immediate availability of version 1.01 of the Matterhorn Protocol.

A publication of the PDF Association’s PDF/UA Competence Center, the Matterhorn Protocol specifies all possible ways to fail PDF/UA. As such, it’s a set of algorithms providing the practical rules for implementing software that creates, processes or presents accessible PDF.

A free download, the 1.01 release includes two minor changes (two tests previously listed as “machine” checks are now listed as “human” checks) and revised formatting to improve navigability and maintainability.


Tags: Matterhorn Protocol
Categories: PDF/UA