Part One: PDF history
PDF is a formal open standard, ISO 32000. It was invented by Adobe Systems 17 years ago.
PDF = Portable Document Format
The image links to a pleasant interactive timeline of Adobe Systems and its role in the development of the PDF. The chronology is in Flash, and thankfully free of any video or audio. Read more about Adobe Systems role in the history of PDF file development.
PDF files are more versatile than I realized, and
- are viewable and printable on Windows®, Mac OS, and mobile platforms e.g. Android™
- can be digitally signed
- preserve source file information — text, drawings, video, 3D, maps, full-color graphics, photos — regardless of the application used to create them