PDF/A - The format of the future - Part 1: PDF/A-1
The Portable Document Format (PDF) established itself many years ago as the medium for sharing documents in a form that works everywhere. With it, electronic versions of documents can be faithfully presented, opened, and printed independent of operating system and software. The author can specify at the outset in what form the document will be rendered visible. PDF eliminates all those problems that previously arose when transmitting documents, such as formatting errors and other issues stemming from the recipient using a different system than that of the sender.